I also find this idea extremely interesting. Easily plan sail status changes as a round-spanning action and only adjust the sail status at the beginning of the following round.
So far I've only had changes to the Full Sails sailing status, where the ships have to place the blank marker as an additional action to set Full Sails and maneuver with Full Sails. When reducing the sail status from full to medium sails, the standard marker is sufficient.

I don't yet have a new marker for "special" sailing maneuvers such as tacking/jibing and full sail, but that sounds very good.