Ya there's way too many variables to make it work.

As I said, spiteful players. Those who may be upset by people "kill-stealing", or perhaps just looking for that "Best Around" medal. So that's actually a pretty douchey thing to do. If you want to play with a clan mate, get them on your fireteam before starting the match, or you yourself can quit the game and join theirs. A lack of planning on your part does not constitute a kick-worthy situation.

I can see that happening.