I'd die for some medieval content in Sims 4. That's my jam, and an older theme would spice up my political power game stories. But any cozy, isolated fantasy setting with an older touch would be a breath of fresh air.
I wouldn't write off a modern idea either, though. I would also accept something like Magic Town: a dark, mysterious forest with a creepy carnival. If anyone saw American Horror Story: Freak Show, I'm picturing that sort of atmosphere. Normal sims would come and see a show and think they're witnessing stage magic, but the citizens of the town know what's really going on. I'd honestly prefer an isolated town, though.
