Both lore and general forums are filled with topics about how the Horde vs Alliance is stupid for as whole xpac theme. Did no on catch(its on the front page) that yesterday Blizz said at the end of the xpac will be fighting azhra(sp sorry) yet no one is talking about that.
IMO I think the faction war is started due to our old god friends, why fight your enemies if you can infulce them to kill each other and then strike at the end of the war. Now for super tinfoil hat, Jaina is Azhra or under her control. She burns downs Nelf tree because she hates the Nelfs, if she's not Jaina then she's her newly introduced sister. Before any one says bro Azhra is a Naga now, your really going go tell me some like Azhra a gifted user of arcane magic juiced with old god powers couldn't cast a shape shifting spell or one that makes need look human to others. Rant over, for Azeroth!!