Admitting offenses
I believe if a player admits to an offense like feeding, trolling, greifing, or giving up, it should automatically warrant a ban.
For example; "Sure I'm feeding, but Karma doesn't deserve to win this game ;)"
That alone should be enough to automatically flag the account for suspension. That's not having a bad day. That is ruining 4 peoples chance of moving up, and you admit to it. IF the proof is in the coms, it's time to bring out the ban hammer.