I love it, I think we should add it into our list! Let’s discuss it in our next meeting.
Assigning to you just to be sure we do not forget.
Low texture lod level seems to work slightly better for translucency than the original low (16x16) resolution test: https://www.babylonjs-playground.com/#27GIQD#21
It is smoother so it better hides the fact that thickness is calculated only from camera point of view, rather than distance through the volume to the light itself (like it a path traced implementation would be).
Texture lod also nicely allows adjusting thickness texture smoothness based on PBR roughness to better simulate how rougher surface would scatter the light more and make smaller detail thickness differences become less meaningful.