I've often thought of this, usually after joining or starting an open invite game were i completly regret ever being a part of one. i always thought to myself "not again" alot, because it was always the same bad senarios over and over. But i never knew what kind of qustions i'd put on such a thing.
maybe not a full blown application, but at least a decent questionarie so that you could be a little more prepared, especially if your joining or running a game of new strangers.