I'd love werewolves. Maybe something incorporating new understandings of how wolf packs really work, rather than the outdated, inaccurate Alpha-Beta-Omega nonsense. And maybe multiple ways to be one (CAS/Birth, bite, a cursed item... not sure how drinking from a werewolf's paw print would work in the sims, but that would be cool too.)
Faeries ... if they're just the pretty pixies I understand previous incarnations of Faeries in The Sims to be, I'm going to be unimpressed. Unsurprised, not really disappointed, but unimpressed. I want more variety in my faeries than wing type and color, but I have a feeling that like with the sort of magic I want not being practical for a video game, the level of variety I'd want for Faeries also isn't practical (half the pack would be CAS face & body options.)
After that... Djinn might be neat, if they can be done well. (maybe the Muslim/Arabic stuff was a hint?) I've never been fond of Zombies, so I'll probably pass on that unless there's a lot of other stuff I like in there. Anything else I'll have to see what it is and how it's done.