I thought of an idea that you might find interesting. Adding water such as lakes, rivers, seas, etc... My idea behind this is that you can make this into another type of storm/disaster. Floodings. You can also make items that make it so that you can breathe underwater and explore the underwaters. you can also add caves underwater that you can explore. i just thought that it would be a cool idea to have underwater exploring aswell added into this amazing game.