Even if you have lots of customization, in the end most end up the same because there's allways one way of making your char that's slightly more powerful than every other config, the "cookie cutter" build, and *everyone* goes for that. So it's kinda pointless.
But yeah, it'd be nice if MMORPG's were more like say, Diablo II with 24235324 people. Well not exactly like diablo II but.. less of the boring incredibly mundane quests and with some actual meaningful storyline.
It'd also be nice if they didn't require you to sacrifice your life to get anywhere. MMO's are focused purely on whoever has the most spare time, and it sucks.