Maybe as an add-in for the Battles and Boats mod, a range of vision statistic for units. Essentially it would determine how many blocks they could see through the fog of war. Handy for modding and vanilla gameplay.
Funnily enough, that was one of the planned battle improvements. And just yesterday I decided to split the "Battles" part of the Battles and Boats Update out to it's own update.
I'll keep the vision statistic in the Boats Update, though.
