In my experience, Close to half of my time playing DG takes place in the connection screen and/or lobby, sometimes more when trying to play with a group of friends. Games are supposed to be about fun, and right now the connection screen is fairly lacking. You can participate in irc chat, but that's not really good enough imo.
I propose adding a simple minigame that can be brought up with shift+tab, something like tetris or bejeweled (or something totally different) would totally spruce up this part of the game that all of us spend a lot of time with. It could even be made so that you can see other peoples scores (who you are connected to).
http://img13.imageshack.us/img13/3033/dgminigame.jpg
Alternatively you could make it so we can alt tab out and do other things without receiving a fatal error crash. Either or.