At the moment if the room is full we don't see people enter. Please ad a bell of something that sounds when a chatter logs in. That way if will make you look at the userlist to see whos come in.
I'd support seeing this idea developed, although I'd hope that the Minnit developers could add a way to mute the sound as well.
I'd find it quite annoying if I couldn't.
Good idea, nonetheless!