It's been about 6 months since I last logged in, though I do check MMO-champion every week, just hoping and praying that maybe Blizzard would have made some amazing change and WOW will be back to it's brilliant best.
For me it would be a big change to the way PVP works and a massive graphics update, Wintergrasp was probably the last real fun I had, so something like that, and slower paced arena games. Oh and Witcher 2 graphics engine
What would it take for you, or is just too late for the whole system and engine ?