Ahh thats a cool theory, its just interesting that the gun can turn zombies into humans, why would it need to be upgraded unless it had another purpose ? unless it just turns more zombies into people, but that would be a bit disappointing.
See what I think is that there's more to what we just saw from that fast 2 or 3 seconds words of the gun. we only saw the Zombie go from Zombie to Human. But there could be miles more of what actually does besides that. What if that's not even the final result of the gun? lOL. Just sayin.
Yeah i suppose your right, i might be speculating a bit to much lol we shall find out when it goes live tomorrow. All i know is i cant wait to session this map :P