It really does seem that some people are completely unphased by the current system. Really, even if you DO end up getting somebody low-prio'ed, that just means they have problems getting into a game quickly. So they go slow, but meanwhile they still can ruin games for 4-7 people at a time depending on how bad they're screwing things up.

A lot of dedicated a-holes really don't care, they'll just sit around and do whatever until they get into their low-prio games, and possibly behave for a bit until it's time to troll again. A hardware/userid specific, long-term BAN would be an improvement for the game for everyone.