Traditionally, you may high light players territories.
Hover over red player = see red territories. They could be square blocks, or parallel lines etc...
For fog games, I would like to have a '? player' where I can hover over ? player and see all ?'s on the map. To see what regions are in fog very easily, etc.
For large maps especially.
I am playing alot of usa 2.1 fog trench. And it would be nice to see ?s in highlights. they would all be white blocked squares of course. but then i can quickly get lay of the land, and where i need to go.
This would also be nice for hive, and eurasia fog etc. And who knwos what else.
i.e. for usa fog, or just others. sometimes there is one buried ? in behind a capital. it would jsut save so much time sometimes looking for things.