I made this suggestion because it will be easier than to manually change it for each time someone want to change their username.
@BzzBzz I do think before creating my account which username will be used. Is there something wrong with changing username?
@hazzack Well I do agree some people...
Right now, there are no way to change username directly(The only way I know is contacting the mod/dev of the website). Maybe try to add it so people can easily personalize their profile. If it cause the server to be burdened heavily, maybe try to add some limitation like you can only change it...