Probably a silly question, but still...
I'm thinking of using my last jam entry as a jumping-off point for this one. That game is an underwater haunted house that essentially plays like a spooky walking sim but from a top-down perspective, and with a little retooling could comfortably turn into a Zelda-like.
For my money, Zelda-likes and Metroidvanias scratch the same itch. Thoughts?