I'm not too much into female tattoos but I would make skintones out from base texture when needed. Of course if there will be noone else who want to contribute his/her work :P I bet Pistacja would do it way better than me, lol.
Anyway: Progress is enormous. Love reading every post from you guys. About an APA - I like the "wider" version of helmet lower part (As it might be seen in sprites)
About new armors: Seeing something like this:
Would be lovely. You know - something like partially protecting metal armour with tribal marks and various things added to it. Armor made of junk and used/destroyed army equipment! Yes please! :3
This thing looks nice as well for light Enclave soldiers(Or just those without APA):
as a thing opossed to Combat Armor. Plus maybe some normal suits for Enclave operatives? You know, something like Galactic empire suits but with more falloutish '50s feel :P