Regarding Shana's tattoo packs and VSS - I figured out why it doesn't work and SUPER easy fix for it.

Bagginsbill's shader uses DIFFUSE = 0, and plugs everything into ALT_DIFFUSE.

Shana's addons plug into DIFFUSE, and since its value is 0, it doesn't show up.

So to fix, just plug the ALT_DIFFUSE into "SWP_Shana_Math#" and Value1 goes into BB's "Color_Pow"

Its manual editing, but it works at least.