These are some small things I have noticed in my work while modding. All of these things are easily changed through modding and would take only a few minutes.
1. Ribs do not protect organs often enough, only 5% of the time, that's 1/20 shots. This should be increased significantly.
2. Right now, the teeth cover the cheek, the mouth covers the cheek, and the tongue covers the cheek. Same with the lips. So when you attack the tongue with a stabbing weapon, you may go through and attack the cheek, but not visa versa.
I believe it should be the opposite, if you attack the cheek, it should go through and attack the mouth/tongue/teeth etc.
[BP_RELATION:BY_CATEGORY:CHEEK:AROUND:BY_CATEGORY:TEETH:100]
[BP_RELATION:BY_CATEGORY:CHEEK:AROUND:BY_CATEGORY:MOUTH:100]
[BP_RELATION:BY_CATEGORY:CHEEK:AROUND:BY_CATEGORY:TONGUE:100]
[BP_RELATION:BY_CATEGORY:LIP:AROUND:BY_CATEGORY:MOUTH:100]
[BP_RELATION:BY_CATEGORY:LIP:AROUND:BY_CATEGORY:TEETH:100]
[BP_RELATION:BY_CATEGORY:LIP:AROUND:BY_CATEGORY:TONGUE:100]
should be
[BP_RELATION:BY_CATEGORY:MOUTH:AROUND:BY_CATEGORY:LIP:100]
[BP_RELATION:BY_CATEGORY:TEETH:AROUND:BY_CATEGORY:LIP:100]
[BP_RELATION:BY_CATEGORY:TONGUE:AROUND:BY_CATEGORY:LIP:100]
[BP_RELATION:BY_CATEGORY:TEETH:AROUND:BY_CATEGORY:CHEEK:100]
[BP_RELATION:BY_CATEGORY:MOUTH:AROUND:BY_CATEGORY:CHEEK:100]
[BP_RELATION:BY_CATEGORY:TONGUE:AROUND:BY_CATEGORY:CHEEK:100]
3. Finally, it's always bugged me that hitting the eye or ear does not have a chance of hitting the brain. So I added this. It works quite well, because you still need to go through the skull in order to kill someone.
[BP_RELATION:BY_CATEGORY:BRAIN:AROUND:BY_CATEGORY:EYE:100]
[BP_RELATION:BY_CATEGORY:BRAIN:AROUND:BY_CATEGORY:EAR:100]