i hope we get water currents. like moving rivers and streams. the oceans would probably a bit too hard to do right now but for rivers and streams i thinks it could be done. also if done right they could add waterwheels to the game as another power source like the windmills. i want them so bad!!! a waterwheel would be like a vertical giant gear but with plank/bucket parts in it to catch water. things like these pictures below would fit in so easily with the look and feel of the game.