Ok, maybe this is not quite relevant at this state of the development, but this is a fast test on some shading for humans on Lux, by now I know some translucent effect can be done mixing materials, look at the body texture of Posette, I'm not sure it looks realistic but it can be done. And something that may be considered specially for BB that is on the materials: the transmaps must be inverted, white is transparent, black is solid, I don't know if it can be solved someway in the code, not in Luxblend.