Good communication and friendly people. I know that last one is usually a tall order but most people that join my clan are really great. We have a mix of hard core and normal players. And everyone generally has a good time playing together unless someone us just being a bit much, but those are mostly randoms we try to fill at the last minute. We had a team chart so people could post general play times so people can find a team that they can play with regularly instead of new teams every time they get on. New people added regular playing members to have a large pool of friends to play with in case their team was busy. Other then that I really can't think of anything off the top of my head.