This is amazing, it all works!!
Now if we can just get KHR_materials_diffuse_transmission implemented 
yup it is next on my list but requires more shader changes 
I’ve revamped the sample asset. Now it contains examples of all available texture slots.
The one texture that doesn’t seem to be animating correctly is diffuseTransmissionTexture (alpha channel).
Hey @echadwick-artist could you isolate the broken one in a glb for me ? I will have a look ASAP
animationPointerUVs_diffuse-transmission.zip (595.7 KB)
Thanks for looking into this sebavan!
Will be fixed by fix translucency intensity texture by sebavan · Pull Request #15293 · BabylonJS/Babylon.js · GitHub thanks a lot for the repro, it helps a ton 