There's an item request thread on the forums that's followed by some item creators, you should hit them up with a list of instuments you'd like to see.
0rava, I've encountered a glitch that I think should be added to the game. I used the launch tool on a javelin and threw it at a ragdoll's head. The javelin pierced through but still got stuck inside the head.
Already in the game, kinda, you can set the wounded bodypart on fire to close wounds. There's no localised temperature so cauterising specific wounds is a bit iffy.
I hope 0rava would make it possible to cauterize wounds (Stop bleeding with heat). I would really like to reenact the scene in Dead Snow where the protagonist cauterizes his severed arm
For sharp melee weapons, make the sharp melee weapons like chainsaw to first injure the limb off before cutting. Like rapidly make the limb lose health and if that limb gets 0 health, it gets cut instead of being vaporized
It's a technical thing. Lightsabers in the game are effectively lasers/raycasts which can not collide. They work like this because the collision based implementation featured in MaD1 was really really wonky and barely worked.
 "Mutilate-a-Doll 2"){kind=icon}
Link to the forums is in the main menu and description. The thread is stickied.