A mod that brings ragdolls to life, and I don't mean it turns them into an NPC, I literally mean a floppy ragdoll bobbing around the map, a constant ragdoll that flies backwards from explosions before standing back up and its head flies backwards when you hit it with a crowbar!

Here's how some of this could work:

Ragdoll Machine: An evil doctor esc table entity with a laser pointing down on it, place a ragdoll on this machine and choose wether you want good or evil ragdoll.

Good: You can ask it to follow you like civilians NPCs, it will try to beat up combine/hostile creatures by flailing its flop arms at them but only if they hurt you.

Evil: It will join forces with combine and it will try to attack you by flopping its arms at you to cause rag collision damage.