How about making dual wielding an upgrade?xd What ever way you choose to incorporate that, I WANT IT!!!! I would like to see Poison zombies, throw and collect Poison headcrabs. Collecting dead poison headcrabs will make the healing aura and poison gas larger, higher strength, slower and a bigger target? xD When Normal Zombies are killed without headshots, they automatically become headcrabs or crawlers. When Fast Zombies are killed without headshots, they automatically become fast headcrabs or fast crawlers. (also add in fast headcrab and crawlers) Fix collision for poison headcrab, headcrab and fast headcrab, as they cannot get through windows and crouching places. Good ideas, but i think it would be too complicated?? and i dont personally would like those ideas, (execpt dualwield) anyways :S