I didn't take it the GP was talking about Animoji, as those are motion-captured, rendered in 3D and sent as pre-rendered video files (GP mentioned something tha

I didn't take it the GP was talking about Animoji, as those are motion-captured, rendered in 3D and sent as pre-rendered video files (GP mentioned something that could be represented as animated SVG). I don't think anyone is proposing a way to encode facial motion-capture into Unicode.