First off, huge props on this work of love.
With that out of the way, it would be amazing if you could adjust thigh/ass/leg thickness for characters (MC and others). I know a lot of people could consider this blasphemy, but I'm positive a lot of people would be super grateful for a setting for thin thighs, as some scenes have felt like a lot extra was added (e.g with Alma)
I'm guessing this would be a huge effort, so I'm not sure if it's being considered, but would definitely be a very welcome implementation.