You know what is bothering me still, that ships can turn in circles on there keel with no wind or sails. I hate the circle turning that some ships do in order to get off both broadsides at you wile doing spin attacks that are not possible for sailing ships.
Yea, what about modding a new sailing mode into the game where your crew will use long paddles from the bottom of the ship? So you have to decide to either use sails or paddles depending on the situation.
Should be a lot of fun work to do.