How do people feel about the Scan / "Map Hack" Mechanics?

Personally i really think it detracts from the game massively, and that all units with this should have it reworked or removed, and an overall "Line of sight" rework done.

I think passively scanning half the map limits potential for flanking, invisible units, or any kind of bait gameplay/ambush. it removes a lot of the intelligence from gameplay and makes people lazy.

I think the line of sight mechanic should just be expanded, each faction should have more options for line of sight and detection that dont involve this mechanic. The only method of detecting units should be with a unit physically spotting them, or call ins that provide vision.