Ok, I've tried both demos, and I think they're just terrific. Very impressive -- well done, and thanks for posting the code.

Here's a couple of quickie comments:

1. PP generates a syntax error with += statements. Demos work fine in P5, as well as in standalone python.

2. One pose file to generate many partial poses...yes, I can see the utility in that. Are you also thinking of extending this to character files, e.g., parse a character file into Mat poses? JCM poses?

(sigh...could've used something like this a month ago...)