True, but I think many of us don't want to give out our personal information like that where everyone can see it.
Most things that can be used for good, have to potential to be abused. Why would someone say "Champions league guy in chat room 10!"? They'd wanna keep it quiet so they have more of a chance to get him to join their clan. If something like that did happen, the champion could relocate to another room, or people can mute them. If friends get together to make fun of someone, the someone can mute them. To avoid room floods, there could be a limit of how many players per room.

