If there's one thing that I'd like to change, it would be the controls. In browser, the middle mouse button activates auto scrolling, and in game, it can lead to the ship getting stuck in a building. Overall, it's a good game, it's just that one control that was causing issues for me.
Edit: Apparently sliding my mouse left while also holding down middle mouse button causes the page to go back. This control *definitely* needs to be changed.