Hi ODF
Here's my take on the mapping.
The good: I like how you cut the lower part of the body and made the legs straight ( not the classic x pose ) it should be easier to texture. I think it would be better to add the genital to the lower body.
The bad: I don't like that the upper torso is seperated from the body. A seam in the front wouldn't be real good for textures.
The ugly: I really don't like the side by side mapping for the head at all. It would be a nightmare
to texture. You might want to try a front view under the jaw line is a good place to hide a seam.
Please no seperate lips or she may suffer from sharp lip syndrome. As Baggins mentioned
about v4 having the lip material your may suffer from that effect because you couldn't blend the lip into the face. I suppose BB could still do it with  shaders but how would you get a smooth blend even with a mask control map.

I think it would be best to keep all parts of the body together with maybe the exception of the feet and possibly  hands on another map and all head parts besides eyes,lashes,etc. on another map.

Something like this.
Head map
Bodymap
Hands and feet map
Teeth,tongue map ( possibly on the head map )
eyes map
lashes map