I understand that you feel right now that the overworld is kind of unnecessary. I would have made it a lot easier for myself by just omitting it XD. But I really like exploration in games and want to incorporate that into my game, but right now there is not too much to explore. In the future I want to add more stuff to the overworld that makes it worth exploring more, and also some fast travel options as right now there is too much backtracking through empty locations.
I appreciate the thought you’ve given this :)