It's recently come to my attention that during land sieges, movecrafters often try to run out of the siege zone if they know that they will sink. This happenes due to movecraft sinking outside of the siege zone not giving points for the siege.
In movecraft regions, ships that have entered the region once will sink for points, so this playstyle does not work.
I dont see a reason this should not be implemented in land sieges, most of the sinks happen outside of the region due to this.