So rate my Horde dismantlement plan:
* Orcs are gassed. Murdered. Shot. Genocide, they've been given too many chances. We need a solution to end this once and for all. A final solution. Hunt them in Outland too. Upon the ruins of Ogrimmar, and other former Orc lands, new human, dwarven, and gnomish colonies, Draenei settlements, as well as extension of Night Elf borders south ensure that any Orc bands that manage to take to the wilds are destroyed the second they raise their heads. Outland is given to the Draenei.
* Darkspear Trolls are forced to outlying islands, their numbers who remain on the mainland free to cull. All warmachines and technology stripped, offering a way out if they fight attempts to revive the Gurubashi Empire.
* A crusade is called on Lordearon. The Forsaken who do not pledge loyalty to the Crusade will be burnt without mercy. The Valkyr killed. And then, finally, Sylvanas is thrown from the top of Icecrown, and killed like she originally wanted. Lordearon is proclaimed once again, and while it will take a long time to cleanse, Crusaders like the Scarlet will help hold the land from their crusader castles.
* The Tauren are driven from their lands. Either all other Tauren are sent to Mulgore and it becomes a reservation, or Mulgore is levelled, and they are sent to a reservation in the mountains.
* All Horde goblin assets will be siezed, their owners expropriated, and their assets divvied up amongst the Alliance and friendly goblins.
* Blood Elves will enter the Internment Camps of the former Orcs. There, they will enter forced drug rehabilitation alongside hard labor at the gulags. Watched my Night and High Elf kin, they will be monitored. If they can kick their habit and prove to have loyalty, only then can they live in Quel'thalas. If they die, they die.
* Horde Panderen are flayed, and skinned alive, their soft fur used to start a boom craze in new carpets, financed by goblin capital.