[salesman]

Just giving them their community name might cause some problems because what used to be their "account" was once entirely different from their communityname. If Graal234252 is in the serveroptions as a staff member and is then given his communityname "lolnoob", he is no longer staff. Same goes with scripts that may be account-locked to him: if (player.account == "Graal234252")

Now think about if you allowed players without communitynames to choose a new account name. Graal777336 chooses Graal234252 (who was assigned his communityname, "lolnoob") as his account name and becomes staff.

I guess you could forbid all Graal###### accounts from being chosen, and server staff could just deal with all the other problems that come with the transition.