Honestly, this is the kind of modding content I enjoy the most. Simple, useful, and easy to try out. Appreciate you taking the time to share these with everyone. Keep it up!

At 33m50s

Right now we don't care if strings are approved or not, we take whatever we can get (we obviously filter for vandalism though). The best way would be to get in touch with one of the language coordinators (https://app.transifex.com/wildfire-games/teams/17418/tr/). If they aren't responsive, let me know and we'll find another way. 

I would use the blend files rather than trying to reverse engineer pmd and psa to be importable in Blender  (Source: I did and it's not worth the trouble for your case) https://trac.wildfiregames.com/browser/art_source/trunk/art/meshes and animations/skeletal contains most of the blend files you can reexport.