Now, maybe it's just me, but the "force twists the [blank]" addition to the combat system has made it ridiculously easy. Especially the nervous tissue aspect of it. I've never heard of anyone becoming a cripple due to being bonked on the noggin so hard it ripped their spine apart. Brain damage, sure. Knocked out, of course. But... Never seen the nervous tissue get "torn apart" due to blunt force trauma to the head. Also never heard of someone getting hit so hard on the arm that it ripped up their tendon either, tendons are remarkably flexible, usually damage would come from your arm being twisted in a joint lock (which is already in the game).
I could believe that this would happen if, say, a Forgotten Beast hit you on the arm, or the head. Or if it was a Superracially strong vampire with a maul. Something like that. But just a normal bandit? Idk. The tendons and nervous tissue really need to be strengthened if this system is going to stick around, because all I have to do is run around with a warhammer and a shield with dodge and I'm immortal. Smack someone on the head once and their spine rips up and they flop around on the ground til they suffocate. This happens even through steel helmets! I do like this system when fighting Megabeasts and other similarly big creatures, because its fairly believable that being hit even once would basically mean you're dead or so badly mangled that death is one step away, regardless of your armor. But it needs balance against more human-sized creatures in my opinion.