How about this. Instead of modeling complete zombies with clothing and all, create "naked" models and give the z's equipment slots for clothing. This way you can randomize the clothing sets of the zombies and it would give the rotting hordes much more variety. Also you can punch a zombie down and steal his clothes, which is actually kinda weird. I dont know if this would have an impact on the performance, or if its even worth it to put this feature in, but im kinda bored of fighting zombie clones. What do you think?