Maybe improved multi-player, bigger yachts, smaller cruise ships, another fishing boat, better deployables for some certain ships, more AI ships made into player ships, scenery improvements for some ports, easier mission editor interface, improved walkthrough camera (faster sprint, accessibility to more areas on certain ships, ability to climb all ladders, etc.), improved physics for some ships, improved details for some ships, improved horns for some ships, better bridges, better "underway" lighting, the Great Lakes, and better FPS in precipitation for starters.