Do you still plan on adding futa content? The custom character creator is awesome, and throwing that option in there would be a major selling point even if you don't sped Dev time making precon characters with that option built in.
I'm a fan of what you have created so far, and a fan of Meis3D (for reference).
My only other suggestion is to add a free camera button "mid-scene" to help players (like me) who don't pose characters all that well.