It's going to get worse before it gets better.
In his Dev Watercooler about faction favoritism, Blizzard's Dave Kosak made this point, and it's a good one to make. In a World of Warcraft, the lore works to drive us forward, cresting on the waves of what's coming next. In patch 4.3, we're finally going to get to see the events of the War of the Ancients, fight alongside dragon aspects and the great heroes of the past and secure Azeroth's future. But in so doing, we find ourselves forced to deal with the aftermath of Deathwing's actions. The Azeroth we inherit is one that bears the legacy of the Wrathgate, where Horde and Alliance forever surrendered tentative attempts at peace and cooperation. The Azeroth we save is battered by years of conflict against terrible adversaries, and in this diminished, broken world, the Horde eyes the Alliance like a wolf views a sick elk.
This is where the war starts. The Fourth War, it may be called. The War for Azeroth, the battle between mortals, for mortal concerns. At last, at long last, the battle postponed by the Third War can finally happen.