Wow, actually decent 3D in a Renpy game, you know how rare that is to see? Only real gripes I have are the wildly inaccurate "I've done all I can with this characters" statements that at first lead me to believe I'd gotten all of their content... when in reality I'd only done maybe a third of it. If possible, you might also want to consider having certain "serious" sections disable Gwen's phone stuff temporarily, as uh... well, kinda ruins the moment when immediately after the start of CSI Faerie World she rings you up.
The ability to stock up on consumables rather than only carrying just one, if you have the money for it, would be quite nice... although I'm unsure if the way you have it set up, presently, would allow you do actually do that. Got real annoying having to run back out to the middle of nowhere for potions after using one.