Being able to replay scenes by talking to the characters, or even having a couple scenes unique to visiting the characters, would be nice. It would also justify the sandbox aspect of the game. Because this current early form of the game feels more like a linear VN, but with extra steps. That said, I *think* the dev mentioned making the open-world part of the game have more purpose. So repeatable scenes might become a thing in future.
Edit: There are a couple of super short scenes you can have with the characters, if you've progressed far enough into the story. But their not all that much yet.