Start nerfing individual players.
Guys like Herbs, Meng, Jackie, *sk, Lookback, etc.
Based on their steam IDs, they can't use an AK, can't get laser sights, etc. And they generate points at a much slower rate than the "average" player on the server.
That way no matter what team they end up on, it won't be as "stacked."
Plus, that way I might actually be able to kill one of them one time.