I'm again in favor of allowing it once per account, period. I wouldn't even allow it again in the future for paid purposes, unless new races are again introduced... I do think I agree with Yoshi's worries that it would be very strange for, under otherwise normal circumstances, people to be changing races left, right, and overnight. But, that said, these are not normal circumstances, so I think the option should be there, be there for free, and be available once. However, I do hope it isn't forced on you the instant you launch the 2.0 client, as having some time to think about it (perhaps keeping the option open within the login/character selection menu during the entirety of the 2.0 Free-to-Play period) would certainly be nice.