Curious what all these MMOs are... I haven't experianced any that implement such a seperate apperiance function. Keep in mind we're talking about games where your gear in some way determines your appearance, not where "costumes" are a completely seperate feature that requires no work on the side of the player. TOR is still leaps and bounds ahead in customization during character creation vs pretty much any other MMO i've played (except maybe eve, but lets face it thats a lot of time and effort for something no one sees). Again, I don't count super hero costume games in this, because I really think that is an apples and oranges discussion (but even at that, TOR facial customization still blows the competition away IMHO).
EQ2 has a separate appearance tab. As does LOTRO.