Not sure about the first part of your question, but I'm good with pose/animation hacks. The options offered by Paul's Reaction Tester are fairly limited. If you're looking for in-game animations, use
Decorgal's Sitting/Standing/Action hacks, and her Model Pose Hack for face overlays (expressions). Aikea Guinea has two hacks
HERE and
HERE that have a lot of the standard animations, and Jaydee has EP-specific animation boxes
HERE. If you want non-game poses, GOS has a list of the various poseboxes
HERE, but a lot of them are hit-and-miss as to quality and content.