So at the end of a match when overall performance is weighed, they judge a raider on time, how many lives used, and player MMR ( and sometimes extractions). When you face an antagonist it gives you there MMR. Could you switch some stuff up and\or add?
I think raiders should be scored based on who has the higher MMR (Raider MMR vs Antagonist MMR). Also Antags get scored based on time delay and how many raiders killed. Could raiders get extra points for how many times they kill the antagonist? Good team work is essential when an antag is on the board and should be rewarded.