Before I go and fix this internally via a F4SE plugin I'll atleast make a plea for a patch perhaps to stop shoving everything related to facial cosmetics in the Race record, this makes all of this content completely unmoddable without conflicting. I don't believe being forced to merge this stuff is going to be the right way to go.

This was a problem with warpaints in Skyrim which I fixed by allowing dynamic replacement of the texture array prior to being merged into a rendered texture though most of the structure has changed it remains in the Race record.

Some things fixed to the race record:

-Available Hair Colors

-Face Details (Old, Young, Weathered etc)

-Face Paints

-Eyebrows

-Face Tattoos

-Makeup (Lipstick, Blush, Eyeliner, Eyeshadow etc)

-Scars

-Bruises

-Face Regions (I assume these are the mask textures that make the green glow for where you're selecting)

-Markings (Freckles, Moles etc)

-Eye/Nose/Forehead/Ears Textures (Rested, Tired, Prominent, Worried etc)

Overall there's tons of stuff here that could be moved to new records to improve moddability, the race could link to the lists via FormLists.

Some that could be done very trivially without even creating new Form types and just using FormLists:

-Racial Presets

-Available Hair Color

-Face Detail Texture Sets

Also another slight suggestion that would be an easy change at compile time: increase the size of the biped objects bitfield from a 32-bit integer to 64. I imagine it's going to get alignment padded to 64-bit anyway and is quite wasteful, I'm sure once mods get going people are going to want to cover themselves in armor/weapons/whatever.