Hello! Thanks for the feedback!
It's not possible to complete the druids without them succumbing to the evil, although there are two distinct endings, if you managed to get to them and remain a virgin. This ties into the medallion as well. The medallion also allows you to enter any level of the plane of pleasure at will once in there.
I think you're right, the lizard should have some dialogue if you present her the medallion, that makes a lot of sense. I'll look to add that in.
Enlisting the raccoons help ties in with the visit to the dragon in his cave. If you explore the dragons cave, you should find something the raccoon can help you with later on.
There are a few different things going on with the dragon endings. I believe either leaving him trapped in the ravine, or returning after trapping him and setting him free are the 2 main ones, if I recall correctly. As for the bunny, I think you might be slightly mixing up the mouse with the bunny - the achievement 'Buns Hon' is for choosing the bunny druid when given the option of which one you'd like to claim. The 'A Rodent's Deal' achievement is for gathering all his leaves, letting him ensnare you, then at the end of the game choosing the 'You know a powerful alchemist' option.
If you want any other info, just ask! We love getting feedback from players :)