i think that it would be good to be able to change yur username if you wanted to

This has been suggested, but no word on if it will be implemented as far as I know.

http://www.sylestia.com/forums/?thread=8073&page=1

If you desire to have your Username changed, you stould try sending a mail to Krinadon or Faiona, our Admins.
Along with the reason why you'd like to change it of course!

I believe they'll accept unless it's not reasonable~ ^-^
There's nothing to lose, the worst you can get is a no~ ;3

But I don't think there will be a way for us to change our Username as much as we want, because it could lead to abuse! :o