A fear many Alliance players have is that everything that the Horde has done to the faction up until this point will be laid on Garrosh and all will be forgiven. Can we safely assume that this will not be the case? To the Alliance, the Horde has a lot to answer for without Hellscream.
I address this somewhat in an above answer - how SHOULD we depict Alliance justice without deleting a bunch of old zone content? Also, we still need to make sure a Horde EXISTS after Garrosh falls, because, you know, they're half our players. But certainly going forward into the next expansion we can carry forward the themes of Horde trying to rebuild itself from an absolutely terrible war and the Alliance - a unified victorious juggernaut - taking the initiative in the challenges that lie ahead.
Orgrimmar is going to be a bloodbath.
To me it seems like Orgrimmar will be destroyed but then rebuilded :> How do you guys see the end of Orgrimmar? What do you think will happen?