Based on the new raws, I've gone over VBASE.
I feel I should outline the changes that I've made, since the alterations in the vanilla raws haven't been that extensive.
1) CONNECTOR has been added to lowerspine, as it was in the vanilla raws. However, in the vanillar raws, CONNECTOR was also applied to the neck.
Let me explain why I've added this to the head instead.
The CONNECTOR tag will prevent severing of the body part it is connected to unless the CONNECTOR body part is already severed. So, for instance, the lower spine will prevent the lower body from being severed unless the lower spine is also severed.
In the vanilla raws, this is the body structure.
UPPERBODY - HEAD - NECK
As you can see, by adding the CONNECTOR tag to the neck, the head will not sever unless the Neck is already severed.
However, VBASE bodies are structured like this:
UPPERBODY - NECK - HEAD
As a result, the CONNECTOR tag must be applied to the head to achieve the same effect.
Incidentally, as a result of looking around at this, I noticed I'd failed to remove the [INTERNAL] tag on the neck, essentially creating some kind of bizarre body structure where the head was connected to a neck placed inside the upper body. Horrifying.
I've also refrained from making the change of upper spine to middle spine, and neck to upper spine.
I've updated the RCP body parts to have the same body structure, and have included it in the VBASE pack.