Yeah, I wouldn't mind some people playing as races such as that, from experimentation or otherwise, but I'd like to stick to undead characters for the most part. I feel like if there were a ton of characters playing as non-canon races it wouldn't fit the whole Dark Souls atmosphere. I'm not trying to restrict creativity, but there's roleplays where numerous races work and there's ones where they don't, and I don't think they'd work in a world such as this. 

I'm gonna get to work on an opening and the such soon, and get some more ideas to start off with. If anyone wants to throw some more ideas in, please feel free! :)