how are you looking to protect against cheating. the q2 netcode format is out with the opensource. I was wondering if you would consider client side implementation of punkbuster, removing the netlag it causes. if not, simply adding heuristic detection of variables triggering around weapons firing, checking to see how continuous the player crosshair tracks perfectly whatever the person is aiming at. note that most people never actually track all that well compared to bots. this may be rudimentary anti cheating code but it will kill any blatant bot usage.