There should be at least an interesting underwater location we haven't seen yet. Also it think a rustic seaside town can be just as interesting as say Corona which was rather idyllic and simple for being mostly forest while still having some amazing locations.So Luca trailer dropped. So far the film doesn't look like it offers a whole lot that would make it interesting as a video game level. Small setting, mostly just normal people in an antagonistic role.
I think KH needs more of those simple locations with simple stories to break up the larger levels.
Also a town of people who hold a hatred for sea creatures makes for some interesting "inner darkness" discussions.