I came back to wow just to play with a friend, after quitting in late cata.. I can say that MOP is definitely better than cata so far (there's actually shit to do) even if I'm still pretty tired of the game in general (and video games for that matter). I'm not saying it's fantastic, cause I think the whole pandaren thing is fucking stupid, and LFD/LFR still exists (uggh) but they've definitely done things to fill the game back out.
Cataclysm was like a hollow shell of WoW, with so little to do, so few dungeons and raids, no one in the world etc. and while shit like CRZ is clearly just a bandaid for a bigger problem, it's a better bandaid than we usually see from Blizzard. Most of the time we just hear an excuse along the lines of "we can't fix this the way we want to, so we'll leave it broken". Or even better, they will not even acknowledge an obvious issue until they have some kind of solution planned...