>>12520 (OP)
Mag'har Unlock Scenario - Inconsistencies and Impossibilities

For reference: https://youtu.be/cEaurbg7XtQ

Anachronos: "Is it time for you to visit me already? Yes, I suppose it is then."

Thematically inconsistent:

“Unto you is charged the great task of keeping the purity of time."The Bronze Dragonflights task is to prevent any interference with the timeline. Throughout history, they were repeatedly approached for help, but they always refused to turn back time. Even in the one exception of the War of the Shifting Sands where they themselves were threatened, they acted in the present, not in the past. Their entire task revolves around preserving even the most terrible events: The opening of the Dark Portal, the razing of Stratholme, the creation of the Dragon Soul.
Yet, when a Horde adventurer comes asking for help connecting the timeline back to the alternate universe Draenor in order to gain allies for their war on Azeroth, Anachronos agrees without a moments hesitation.

Sources:

Thrall: Twilight of the Aspects, page 286
Day of the Dragon, page 104
The War of the Shifting Sands
World of Warcraft - Several Dungeons

Anachronos: "It was there that Gul'dan used a piece of the Vision of Time to travel between realities."

Chronologically improbable, technically impossible:

The Vision of Time was shattered on Azeroth during the trial of Garrosh, prior to the events of Warlords of Draenor. Chromie gathered all the shards, save for one, which was taken by Kairozdormu to Draenor and later handed to Garrosh. This is the only shard Gul'dan could have retrieved.There is no known instance of Gul'dan visiting Nagrand between the events of "Gul'dan and the Stranger", and Grommash putting him in chains after the events at the Throne of Kil'Jaeden. After his release at the Dark Portal by the adventurers, he does go into hiding, but neither he, nor the Legion have a presence in Nagrand.Though he does at some point retrieve Gorehowl from Garrosh's corpse in Nagrand, he doesn't know about his origins, the Vision of Time, or time magic in general. Even if Garrosh had the shard on him at the time of his death, between that, and the beginning of the Tanaan campaign, there was no time for Gul'dan to learn to use it, let alone in a way that exceeded a single shards power. Kairozdormu himself admitted that the shard could only resonate with the original Azeroth, where the rest of it's pieces lay.
Sources:

War Crimes
Hellscream, pages 4-6
Gul'dan and the Stranger
World of Warcraft: Warlords of Draenor - Intro cinematic
Patch 6.1 - The Legendary Quest Continues

Eitrigg: "Durotan was chieftain of the Frostwolves. Never have I known a more honorable orc. He was a true leader who loved his people. I miss his wisdom."

Impossible bond:

Eitrigg was born a Blackrock clan member. He became a Blackrock clan lieutenant during the Horde preparations of the attack on Azeroth during the First War, overseeing the building of the war machinery in Gorgrond. He would serve under the Blackhand, then later follow Orgrim Doomhammer as advisor.
Durotan and the Frostwolves made up only a minuscule portion of the Old Horde with about 80 members. While the Frostwolves followed the Old Horde to Azeroth, they did so with little other choice. Soon after the invasion of Azeroth, the Frostwolves were removed from the Old Horde.
The adoration Eitrigg holds for Durotan can impossibly have come from actual knowledge, as they served the same banner for about 4 to 5 years, and had no contact even during that time.

Sources:

World of Warcraft: Chronicle Volume 2, pg. 83
World of Warcraft: Chronicle Volume 2 page 129
Clarification:Working with the original timeline, pieced together from the independent sources, the Lich King fell in year 36, which would place Eitrigg at an age of 19 during the drinking of the Blood. This timeline also placed the Kosh'arg during which Durotan and Orgrim met far sooner than year -13, during which they were already or close to maturity, leading to a substantial age difference between Eitrigg and Durotan, with Durotan being in his 30s by the time Eitrigg was born.

>>20045
Gul'dan only survived because the Draenor campaign stopped Grommash and his Iron Horde. Had Khadgar, Thrall, etc., not interfered, the Legion would have never come to the planet.

Gul'dan and the Legion were no tyrants. Villains, yes, but they ruled over no people and had been on the defence from the moment they came into the picture.

To put it into a real world context: Fury of Hellfire was the last patch, and the last raid Warlords of Draenor saw. Outside of this, the only other Legion content was Auchindoun. Everything else was Iron Horde, Arakkoa, or Botani themed.

Sources:

Warlords of Draenor Patch 6.0.2 - 6.2.0

Eitrigg: "Now Azeroth faces a similar threat"

Twisted logic:

The Horde launched a full on attack on the Nightelven capital during a time of peace, murdered countless innocents after already having won the war, kills their own soldiers in a gas attack, and blows up one of their own capital cities to prevent the Alliance from claiming it. Yet, Eitrigg formulates this as if the Alliance were tyrants similar to Grommash, trying to kill everyone who opposes them.
Sources:

War of the Thorns
Siege of Lordaeron

Eitrigg: "You are the daughter of Durotan and Draka. I see them both in you."

Impossible bond:

Eitrigg claims to see a Warchief from a small clan he had no possible business with, as well as the Warchiefs mate, both people who have been dead for 42 years, in a woman he has known for five minutes.
Sources:

World of Warcraft: Chronicle Volume 2, pg. 83
World of Warcraft: Chronicle Volume 2 page 129

Geya'rah: "My father fell in battle to the Lightbound."

Shifting Alliances:

Durotan and the Frostwolves had almost been killed by Grommash and, together with the Draenei, played an instrumental part in his downfall. Still, Durotan chose to ally under the new old Warchief of the new Mag'har Horde, against the Draenei he fought together with to free his people. From Grommash.
Sources:

World of Warcraft: Warlords of Draenor - Battle for Shattrath
World of Warcraft: Warlords of Draenor - Fury of Hellfire

Geya'rah: "But without demons to fight, the draenei became fixated upon their precious Light. Their naaru masters compelled them to spread their influence among the orcs."

Inconsistent characters:

Assuming the naaru on AU Draenor are the same naaru that landed with the draenei in what is Outland, that would mean the following naaru now occupy AU Draenor: K'ara, D'ore, and K'ure. K'ure is killed after transforming into a void god, and D'oro would need another 20 or so years before regenerating.The next point would be, if more Naaru arrived on Draenor to lead the draenei, who would that be: The same Naaru that came to Outland when Velen and Khadgar called for help. After all, it is extremely unlikely that on all of space, several ships just happened to be close to the same planet. This would mean that the "naaru masters" who compelled the draenei to force the Light on the orcs were A'dal, who took in the Bloodelves and commanded the attack on Illidan at the Black Temple, Xi'ri, who led that attack, and O'ros, son(?) of Xe'ra, among others. The very same naaru who had so little connection to the fanatical arm of the Light that they killed "the chosen one".
Sources:

World of Warcraft: Chronicle Volume 2, pg. 51
World of Warcraft: Chronicle Volume 3, pg. 140
World of Warcraft: The Burning Crusade

Geya'rah: "The tyranny of the Light must be ended!" (Symbolic for the general portrayal of the Light)

Inconsistent portrayal:

The Light has saved both Azeroth and Outland countless times, providing the only real means of defense against overwhelming foes. The Light is often said to bring about feelings of positive emotion— hope, courage, comfort— and the like. This is the first portrayal as of the Light as an antagonist, without providing any meaningful reason for why things are happening.
Source:

Ask CDev Answers - Round 3
Warcraft 1, 2, 3
World of Warcraft
Clarification: "The Light" was never depicted as having an agenda. Conversion was never the goal of Light users. The Scarlet Crusade, Arthas, Zeliek, all used the Light to commit atrocities, but they all used the Light, which only answers to a righteous heart. All of the users listed believed their cause to be just, which in part, it was, though its application might be questionable. The Arakkoa do not use the Light, but "Sun" magic, which shares little semblance with the Light as used on Azeroth.

Source:

Eligor Dawnbringer in Dragonblight
Beasts of the Savage Lands - Spires of Arak

Geya'rah: "No... a naaru... Not again!" (as a Naaru casts some sort of area attack, shackling every orc. It is implied this will result in them turning to the Light.)

Inconsistent abilities:

There are numerous instances of Naaru being involved in battle - Xi'ri, M'uru, K'iru, O'ros - and all of them remained passive supports to the point were some of them died. There is only one instance of a naaru attacking, K'ara the former Dark Star in the defense of Karabor, and that involved a lengthy wind up, which resulted in the destruction of several enemy ships. Yet Geya'rah reacts to a naaru appearing in the middle of an outpost, out of thin air, instantly incapacitating every orc in a huge radius, like a recurring occurrence. While it is certainly possible that not all naaru have the same powers, Azeroth and Outland have seen 15 different Naaru, of which none have shown to have a comparable power.
Sources:

World of Warcraft: Illidan, chapter 29
World of Warcraft: The Burning Crusade
Blood of the Highborne
WoW: Legion - Quest "Bringer of the Light"
WoW: Warlords of Draenor - Quest "The Defense of Karabor"

Clarification:This is actually a major point in the inconsistency of the scenario, not because "we haven't seen it before", but because it invalidates every action of the Naaru before. As stressed extensively, Naaru have been involved in combat numerous times, sometimes dying without using any kind of attack. The only attack by a naaru had an incredibly long wind-up time, during which it was entirely defenseless. Yet, a nameless Naaru effortlessly incapacitates an entire outpost with no wind-up from the safety of the air.

This is not simply a yet-unseen ability, this is an entirely new school of magic, comparable to Fordring casting light-based portal magic. Not "learning" portal magic, but simply using it. (This did not happen and is only meant to serve as an allegroy.) Why didn't the Naaru before use it? Why did so many Naaru die without fighting? Why did K'ara on Alternate Draenor not use this ability during the attack on Karabor? Or at any other point during the campaign?

Naaru used to be support and defense exclusively, being the embodiment of divine protection, but this nameless Naaru orbital strike renders the entirety of Burning Crusade null and void. TBC has ten different, active Naaru, and still the best they can do is protect Shattrath.

Exarch Orelis: "Cease this pointless defiance, Mag'har!" (Entering in a Warframe)

Impossible technology:

The Exarch pilots a Lightforged Warframe. Assuming it is the Tempest Keep with A'dal that landed on AU Draenor, there were no Lightforged Warframes on board of the ship. If the Draenei had somehow gotten their hands on the knowledge to build the pinnacle of Light war machinery, they could have still not build it on Draenor, as they lacked most, if not all materials to build it. Should they actually have managed to make such rapid advances in technology in just a 30 year time span, it is unlikely the Mag'har, which consist of the remnants of the decimated Iron Horde, could have held their own for this long.
Sources:

WoW: Legion - Quest "Scars of the Past"
WoW: Legion - Quest "A Touch of Fel"
Clarification:Warcraft so far has seen four different, original Naaru ships - Outland Genedar, Draenor Genedar, Tempest Keep, and the Xenedar.

Both Genedars have had no hint of possessing any weaponry or combat vehicles, despite housing three Naaru each.
The Tempest Keep, including the Exodar and all other parts, had no weaponry or Lightforged armory, despite being the by far largest one, housing about eigth Naaru.
The Xenedar is the only ship that possessed both weaponry and combat vehicles.
Further, there are three worlds with Naaru: Azeroth, Outland, Draenor.

Azeroth, despite being the planet most under attack and strategically most important one, has not build any comparable weaponry. The most advanced construction is the Vindicaar, a spaceship with no innate offensive equipment, build from scrap salvaged of the Exodar.
Outland, which has seen the Naaru the longest, has seen no improvement of weaponry or technology, holding on to dear life.
Draenor, a world at peace, somehow is contacted by the Naaru and has the pinnacle of Lightforged engineering after a mere 30 years.
The Xenedar did not land on Draenor. This is a fact - equipped with the most powerful weaponry and the most powerful combat vehicles known to Warcraft, there would have been no war with the orcs. They would have been annihilated with no way of defending.

None of the ships outside the Xenedar have shown any hint of Lightforged technology, and the Xenedar did not bring it to Draenor. The Xenedar and the Army of Light have fought for 10.000 years, honing their technological knowledge - the Draenei on Draenor could impossibly have come up with the best of 10.000 years of engineering in the short span of 30 years by themselves. If they received the knowledge to build such frames, which, while improbable, considering the Naaru's influence on Azeroth and Draenor, is possible, there is the problem of actually building it. The Vindicaars parts could be salvaged from the Exodar - both ships that could fly. But a Warframes parts could not have been used from the Genedars wreck, as the Genedar had no weapon capabilities. If the ship that came to Draenor did in fact have the materials to build weapons, the same problem as with the Xenedar would open up - orcs, with bows and arrows, fighting a spaceship with lasers.

Concluding, the Warframe coming from a ship, while outlandish, is theoretically possible, albeit considering the rest of Warcraft not justifiable. Building it on Draenor with the material and knowledge of the Draenei 30 years ago, is straight up impossible. There are two worlds who have known Naaru for just as long, with a much more dire need of protection, that show no comparable development..

Orelis: "The Light can heal the scars of war!" - Geya'rah "Our scars are not yours to take!"

This is an unnecessary mirror of the "Rejection of the Gift" cinematic between Illidan and Xe'ra.

Xe'ra "Your old life has past; the Light will forge you a new one."

Illidan: "It is not yours to take!"

Xe'ra: "The Light will heal your scars."

Geya'rah: "[...] until Draenor is free!"

A direct reference to the scene at the end of Warlords of Draenor, when Grommash screamed it at the death of Archimonde. Back then, Grommash was the driving force behind the enslavement and death of nearly all non-orcish life on Draenor. It is unclear whether this is meant to signify that Grommash was right, and all draenei should have been killed.