In essence, I want it to be totally a Remus and Hermione story where they are isolated from their friends and family so it's their own adventure. I want it to have some dark and unsettling stuff, some light and fluffy romance sections and be more of a mystery I wanted the town to have an Innsmouth vibe to it. Having it seem perfectly normal on the surface, but the deeper they dig, the more unsettling things become. 
I am also more than okay with us using the Harry Potter universe and doing our own riff on it, changing certain elements that work and others that don't and brainstorming to see how we can add more spice to the overall ideas at play. Basically, I'm not one to sit super close to the rules of the universe. For example, if you want Remus to be able to change form into Moony whenever he wants/needs to, then you go right ahead and put that in. 

  
I realised that my plot could totally be used as a stand-alone for a Werewolf X Witch roleplay. 
So I would totally be up for doing this plot as both of us playing as OC's set in a Potter-esque world. In fact they could meet each other for the very first time when they are both kidnapped. The Werewolf and the Witch have to work together and learn to trust each other plus more, when they escape together.