Decent idea.
For the people saying it'd be terrible (class whining/ death raging/ etc): Not if it actually had admins and the admins actually removed troublemakers instead of politely asking them to please be nice 20 times like they do on the servers.
For the people saying they have a clan server: That's great, no one would force one to move, however it'd be a decent way to get the community interacting more. With point number one it'd be interesting to see a large amount of cross clan communication and do a great deal to stop this ridiculous "my tribe is better than your tribe" foolishness so persistent in this game.
Give a few moderators who are mature the power to actually moderate and the mumble would probably be a hotspot within the first week as the people who couldn't handle themselves in polite company would quickly show themselves and be banned and all that would be left would be the people who enjoy teamwork/ interesting deatchats.