As an MMO veteran I feel customisation is everything. Whether its character, gear, class or housing; I just love it! I can't get enough. I like the idea that I as a player can put my personal touch on something I potentially will invest hundreds of hours on. MMO's (especially RPG's) count on the player having a very close relationship with their playable character, a bond that keeps them coming back for more and more. That bond wouldn't be as prevalent if we all were forced to use the same character, look the same, play the same class and live in the same house.