Some sort of aquatic vehicles should be added. Whether you need to own them by taking them to the water via a trailer, or if they have their own spawning dock. This could also tie into a revamped fishing system (similar to fishing simulator) where there are tiers to fish that you can catch, and cook for yourself, or sell. Some aquatic vehicles that would be cool are not limited to the following; Jetski, RHIB/Dinghy, Catamaran, Hovercraft/Airboat, Kayak, speedboats, and more.