There has to be some kind of give and take here. I Agree there has to be a stop to purposelly being a TK'r.. But on the other hand I know that I have TK'd but not purposelly, like I would shoot a morter at a enemy and then a team mate shows up right as it lands. Boom they are both dead.. That has happened to me at least a 2 or 3 times in a game.. Then I would get booted.... There is a difference between being and Teammate killer and a Team Killer. Granted, some how the Team Killer should be banned for life, or take off Team Damage for both equipment and team mates. Some people will also destroy your stuff..
I have it guys, if you are a Team Killer and say You Kill four Team mates. Then you auto change sides. This way you become the other teams problem, or you worked for them.. Like a trader being exciled. Then if he does it to the other team then he is banned from the game... Something like that.. It just might but a spin on the game too...