But what do you think will happen to you when Fed retires ?
It will remind people that the greatest player of all time was my favorite (since there will probably never be another tennis player I'll like this much).
Plus, I'll almost surely upgrade my account to premium in the next few months (for signature-related reasons), so this won't be a problem at all.
How did you change your name?
There is a sticky thread in one of the last forums on the front page.