The game so far is very fun! I love all the animations of the fairies and toads and the puzzles took a decent amount of thinking to complete.
Other than the stuff promised by the end of the demo, the other obvious thing to add would be some kind of prize to go after for completing the optional challenge missions, though I have no idea what that could be.
I'm just gonna be honest here... I specifically found this game because I was searching for vore games. Reading older comments, I'm quite curious as to what the older "morbid" animations were... (maybe there could be a "morbidity" option in the settings menu to use/view older animations?).