Love the way you can make little icons for your personal handle - this computer philistine has just got to work out how to do it !
What about extending that to Guilds (and can we call them something more appropriate - families, gangs, mobs etc). As a starter for ten the little box could be a different colour for each guild. But then we could replace that with a distinctive icon - gotta keep my guild leader busy or he might spot my hand in the cookie jar …