WorldOfWar.Net has a tidbit from BlizzCon, where Jay Allen Brack was asked
about indications from World of Warcraft game files that paid character
customization may be coming to Blizzard's MMORPG. After seeming to avoid the
question at first, he eventually confirmed that paid-for character customization
is indeed in the works, though no further details are provided.
What MMOs allow you to change your class/race/gender atall?
Thank you for proving my point. The fact that Blizz is offering this at all is surprising, and since it's something you should you have made up you mind on when you rolled (like which server you want to play on), I'm not surprised that if/when they do offer it, they want to charge, to discourage everyone from doing it...
Eventually there will end up more than one subscription model for these games. You'll get services like "basic" and "premium", and the premium model will cost a small fortune to maintain.
I'm sure the Hellgate folks thought that, and look at them now...