I'm currently on a 3 month break from Wow (and also stopped multiboxing for good probably), recently finished Bioshock 1 & 2, GTA4, Mass Effect 1 & 2, Assassins Creed 2, Prototype, and Dragons Age - all AMAZING games, esp Dragons Age. Take a break, enjoy all the single player games you have missed out on, and come back with a single char for cata.

Really not much reason to multibox anymore in wow, given how easy it is to do everything in pugs.