Originally Posted by
Melusine
Speculation here: Archimonde transports us to the Twisting Nether, and is killed, permanently I assume, since we killed him on his home plane. But why would he do that, anyway? I mean, seriously, he could have surmised defeat, abandoned his physical manifestation and attacked us at a later time, but instead, he drew us away to a place where his power would be a bit more unfettered, and more likely to kill the party, seeing as how up to that point he clearly underestimated them. A second cursory glance is simple. Archimonde being sent back to Sargeras in defeat would not bode well, and the penalty for failure may have been worse than death.
Kil'Jaeden, I suspect would be smarter than that. It also appears he has no faith in Sargeras, and may believe he is somehow more powerful than Sargeras. Kil'Jaeden may have his favor with the Dark Titan revoked upon seeing him nearly defeated, and draws him to a place where no one can interfere, and even if the party wins, they ultimately lose. The parting shot will be when we realize, Kil'Jaeden left a present for us back in Azeroth in the form of the Old Gods. Upon using the Pillars of Creation to seal the portal leading to Argus as the party returns, doing so opens the door the other way, allowing for the Old Gods to reenter Azeroth. it is now that we understand a few very important truths.
1. The "she" referred to is the planet of Azeroth, and the reemergence of the Old Gods through her 3rd death will occur as N'Zoth breaches the maelstrom, making what Deathwing did some 7 years earlier look like a slap on the planet's ass.
2. The Boy King's 3rd lie is that he wanted the Burning Legion dealt with so he could usher in the coming of the Old Gods. His other 2 lies involved setting Garrosh free, and double-dealing against the Alliance and Horde to overthrow Garrosh. And the boy king is not actually Anduin, as Gul'dan remarks. It is Wrathion, who has become the new tool of the Old Gods, following right in his father's footsteps. He appears at a very inopportune moment to do away with a couple very influential individuals who command great power against the coming invasion. His targets include Alexstrasza, Mimiron, Bolvar, Eyir, Thrall, Jaina Proudmoore and Anduin Wrynn. Anduin Wrynn kills him. Mimiron, Eyir and the Lich King die. Thrall and Jaina are too well hidden. Anduin is tipped off by Velen of the impending assassination, and being determined not to suffer the same fate as his grandfather, prepares himself to stand against Wrathion, who is no longer a whelp, but every bit as large as Stellagosa.
3. Magni Bronzebeard, well, he is an unwitting pawn, speaking directly to N'Zoth, while being led to believe it is the planet herself. His hand in the heralding of the Old Gods is not malevolent, but it does have the same effect.
4. The Lord of Ravens will come into play to attempt to intervene, and will unwittingly, upon Magni's false advice, turn the key that unlocks the door. We learn that the Lord of Ravens is Odyn himself. Odyn will die trying to undo his mistake, leaving Azeroth in a very vulnerable position.
In the meantime, and in our absence, The denizens of Azeroth are going to have is hands full trying to stop these events from occurring. The only smart one of the bunch is going to do what none of the rest of them ever thought of. 10 years earlier, we managed to wrest the Tempest keep from Kael'thas. The Eye serves as a space craft similar to the Exodar, capable of interstellar and interdimensional travel. Khadgar seeks A'dal to use the Tempest keep to travel to Argus and collect the rest of us up. In the meantime, we meet up with a face that is unfamiliar to us, but whose name has been etched into Azeroth's history in ways no one else, not even Medivh could hope to have earned. Turalyon, on the other hand, knows you quite well. It's time to join the fight and take the fight directly to Sargeras. Bearing weapons of similar stature to the Axe of Cenarius, wielded by Broxigar, we lay siege as reinforcements bearing Primal artifacts that will actually harm Sargeras, and swarm his forces, causing permanent death to the minions of the Legion. Your class champions continue to take up the fight in your absence, holding off the forces of the Burning Legion, and the Old Gods simultaneously, while the Army of the Light lays siege to Argus, prompting many of the demons to retreat to Argus to attempt to castle the king, and how it ends is dependent upon our success in this siege. Once Tempest Keep arrives, and we are able to interdimensionally install a portal leading to Dalaran, we can travel between worlds just as we have in the past to the Outland and Draenor.
This is how I would write the story. I honestly think what will lead to Kil'Jaeden's downfall is Sargeras turning his back on him at a very inopportune time, where Kil'Jaeden has underestimated our collective strength.