Because otherwise the humans can block with their fists?
I am working on a solution for the weapons/fisting though.
If the humans were to get melee weapons, I think they shouldn't be able to block, or should be slower than zombie weapons. (or in some other way less effective than Zombies)
Anyway I ported the mod to latest version.
However, I didn't add the custom scenes yet. But that and more stuff is under way.
http://www.filefront.com/17680748/Zombie2.rar
Instructions:
extract into .../Modules
Then copy the "SceneObj" folder of .../Modules/Native into the mod .../Modules/Zombie2