I'm not sure of the mechanics behind this, nor if it is at all possible. However, we all have times where on a certain map we randomly start off as the zombie 5-6 times in a row? Never giving us a chance to shine defensively, however we also have the times where we never become a zombie to start off with. Is it possible to "reward" those who have better ratios by negating chances to start off as a zombie? Better tactics (and of course a little luck with that final shot), not to mention being better as a zombie by actually searching people out and not afk'ing when you become a zombie might push everyone for that score instead of hiding and playing it safe all the time. Just a thought i've had for some time.