I don't think we ought to ban him... What harm can he bring, if he isn't playing PG at this moment?Nickname Abuse ... ? What is it ... ?
An advantage of player who creates "strange" nickname with weird signs like " IlIlIlIlIlI " , " _-_R4z0r-_-_ ". Difficulty of trying to check the ping of that player gives him huge advantage in "Lag abuse", "Disc Hack" and other cases.