WoW still needs a lot of work. Blizz has promised assloads more than they have in-game, at the moment, but that's okay, as long as it's in sometime in the near future.

Starcraft 2 is likely underway, and Diablo 3 would likely be a MMORPG format game after WoW has been mostly abandoned for newer, shineir MMO's, in which Blizz will attempt to lure them back with D3.

That's just my opinion, however.