Nintendo has talked about the idea of Sheik spin-off game, says Miyamoto

Coming from a Gamerant interview with Shigeru Miyamoto...

“Within the development team, too, there have been talks about how it might be cool to have a game that features Sheik as a protagonist. It’s having maybe a Zelda spin-off with Sheik as a protagonist, for example, I don’t think that’s an impossibility.”

That's certainly an idea I'd love to see happen. Let's hope Nintendo decides to take that idea and run with it, rather than putting it on the shelf.