Hi,
There are groups of team-killing players who enjoy destroying Desert Bus (and other) casual games. That makes it almost impossible to have fun with the game.
A friend of mine creates maps, and some groups of dedicated TK'ers are always trashing the games.
Which made me think of an idea that could be a Feature Suggestion:
When you make a game lobby and open it for the evening, perhaps make it possible to pre-enter a list of player names who are always disrupting things while you're setting up the lobby.
That way, you don't have to police it all night, they don't get in to cause havoc, and eventually they will find that there are less and less opportunities for them to misbehave and destroy other serious player's fun.