you should make it where you can't suicide, when i try to kill someone, they suicide so i don't get the kill. makes my kill/death ration go down. not fair.
And, add this to cubicman's comment, make it where you can vote for someone to leave because he/she is inactive. This might be risky because good people might kick those that suck, but sometimes it's annoying when they are inactive or spamming chat.