I have small idea to expand customisation and mating animation (and something other):
-Add futa to customisation
-progressive erection for spirits to characters in animations (like...penis from non -erected become erected while mating actions, i meant this.><)
-same for romantic actions in dialogue : make penis non-erected by default and make em erected if player do certain actions (for example, prtting genitalia /making out /or cudling enough)
-would be greate to invite spirits on date :3