Finally an MMO with some STYLE. Western (mostly American) developers just can't seem to get it through their thick skulls how important it is to dedicate your online world to a distinct style. You gotta take some risks in the art department!

I dare say the last game that did this was WoW! Even though it's goofy and cartoonish, it's still very distinct, so that when you're online you have no doubts as to where you are. It really is imperative to immersion.
Aion's anime-ish style is, granted, not so unique it's gorgeous and "cool". Conan kind of gorgeous, not really that cool (unless you're really into... 70s style "barbarians"). Warhammer... it remains to be see if it has any effect on their success, but I at least regret they didn't use a more distinct look. It's not as brutally dull as say, EQ2 or Vanguard, but it's still very typical fantasy.

I'm suddenly very excited for this game (now that WASD controls are verified :P). I'm just hoping all those fancy animations don't hinder PvP (a la CoX), and the customary Korean MMO mega-grind (a la every MMO Korea ever made) is toned down.