Actually, I was thinking, you could focus on any ped, and when pressing a key, your own player character would use their currently held weapon, and go around automatically, fighting the ped, not controlled by the player, and it could be stopped with another key press.

Please of please someone make this mod a reality for me.

That would be cool. I'd love to spawn Micah and go a round or two with him bare knuckle brawling.