I don't think that is possible. vBteam have around 20k members and if your name changes. it will make the site down for some time for 5-10 minutes in change and shifting of db etc
garbage.. It will shift nothing, If you feel lucky having some 498746 numbers after your nickname, have fun with it.. I think, that Hoxxy or v0id should make a sticky topic, Somewhere in help section or something, Changing Username. I am sure there are more then 2 people want to change usernames.. It will shift nothing, i am changing 10-20 usernames a day on my forum.. No problems bro
RelaxX