I wish that every time a player is killed in the game there is a deduction of the points (score), so players have to play more the tactical way instead of run and gun.
tactical play
I'm not so sure about this, each team should have a mix of high and low risk players and tasks, each judged and given points based on objective and progression achieved in the game, then kill score added on as a bit of a score tweak. As far as I am aware the game seems to do this ok.
All deducting score will do is make people rage when others don't care or don't know. Perhaps this is an idea for a custom game mode or hardcore mode later on?