Well since you mentioned the graphics
I just think that it's a too easy escape from a load of work to make them cartoon like. I don't mind that they keep up the WC spirit with the same colours and such, but if you want stunning graphics then GW, EQ2 and FF (the mmorpg) are way ahead.
Especially EQ2 has super graphics and I also read that they have 700k voice dialouges set up, made by real actors (not some joe smoe).... lots of work. WoW, that's what I'm choosing tho I just can't say no to it
However I have to say that EQ2, it looks more mature then WoW.