Know when you scout a discovery and it shows up as a tiny magnifying glass? Well when my unit moves away, this disappears totally from the map. I get that it fog of war should hide what's really going on in that hex, but I'd like there to be an icon to represent my crudely drawn map that my scout would have had - so I can come try and find it later. Of course it might have been snagged by someone else while I wasn't looking - which I could find when I finally arrive with another unit. But to have it totally disappear doesn't feel very realistic to me.