I’d rather prefer they stick to storybook classics…wasn’t too thrilled with the Frankenstein inclusion. I agree that Star Wars wouldn’t work- at the very least everything they’ve used has been book based, not film based, and I don’t think using Star Wars would be very organic to the show.
I could see them using Narnia, although I’m less interested in that than Oz or Neverland.
I think it’s strange when people ask for them to include studio specific characters. For instance, I’ve seen a lot of people clamoring for Ruffio from Hook… but he is specific to that film’s mythology of Neverland and doesn’t exist in any other take on Peter Pan. That character is owned by the studio that created that film. I also see Hook as a “what if” scenario rather than part of the real Pan story.
It’s a similar deal for the idea of using the world of Labyrinth. They are studio specific characters and worlds owned by the Jim Henson Company. In general, they’ve used stories that exist across multiple plains- fairytales that have been around in many different forms since the beginning of time, books that are so ingrained in our culture that they are instantly recognizable in any version.