I remember seeing a tutorial where it's explained how to deform low poly by HP's uv's. The example was scarf modeling/baking. It was a great tutorial, but I can't find it anymore Thanks.
Have you taken a look at the Digital Human example project on Marketplace? I found that a great resource to breakdown an approach to rendering skin realistically in Unreal.
I forgot to mention, I've been using your script for some 2D idle animations of mine. For example, turning this guy: Into this: Thanks again for this :D