Suggestion
1. Can we have some sort of a "skill list" of each form where we can see the skills that we can unlock through levelling up.
2. I believe the Night time of the game has potential for some changes. Maybe simple ones like monsters that only show up during the night. More advance options to add to the night time of the game could be quests that is only available during the night, such as perhaps a TF quest for the bonus form that didn't make it to the demo since it is the most fun form in my opinion :D
3. How about weapons and armor crafting, maybe even have some armor sets that can affect the capabilities of Nana's animal forms.
4. I'm not sure if this might be good, but how about passives for each transformations that get unlocked by levelling or by the martial artist guy :D