I think there should be some icon identification and for now I think HTC has it right for ranges.
However... I'd rather see something different as far as WHAT the icon says.  I like the idea of "TRK" for a tracked gv, "WHL" for a wheeled gv, and "HT" for half tracks, at least for distances outside 600 yards or so.  I think HTC is way too generous.
Same goes for planes, too.  I think the icons should read "1ENG", "2ENG", or "4ENG", until 1000 yards or so.  MAKE it so scouting is more a part of the game.
All for game play, yet all helps with the "fog of war" as well.