A revolutionary faction within the horde that seeks to abolish the office of warchief and create a representative, liberal republic.
I'm starting to sound like a broken record aren't I?
That's too advance. The other Horde racial leaders should simply demand to stand as equals against the Orc's leader instead of differing to him on everything. They'll need a forum to maintain some semblance of unity, but whatever comes after the Horde should be based on independent states cooperating to a common purpose.
Oh, and Ogrimmar needs to be totally destroyed. I'd be content with the Alliance leveling the place and burying it under the canyon walls and then leaving. There's absolutely no reason to hold it when destroying it is even more effective.
In fact, I want a scene where before the raid begins Thrall meets with Jania. He begs her to not destroy his city and his people and in exchange he'll tell her a secret way into the city. She agrees and listens to him where he then uses his funky shaman powers to make a map of the underground area, which he knows about because the planning for it began while he was warchief.
After he's done, she laughs at him, telling him she has every intention of destroying the entire place and she doesn't care if his people escape or not. Thrall roars and brandishes Doomhammer, but Jania freezes him on the spot and teleports him into the ocean.
(For those of you don't get the reference, this alludes to how Jania begged Thrall to spare Theramore in exchange for her father's life, going so far as to tell Thrall how exactly to go about invading Theramore.)