OK, the implementation checklist is complete. There are a few compatibility scripts and materials that work with the demo project (with a few minor edits, but nothing complex and results are identical with much better performance than expected)
So there are 2 things to do - test it over the next month or so to make sure I don't give you something broken, and make blendshapes with generative modifiers work (which is just a blender script update, my plan is to get that done tomorrow)
And documentation, I suppose :P that one helps a lot