well it would definintly allow others to be a little more sneaky, I kinda was thinkin about it from a perspective of making NOE planes slightly harder to track, and the same would go with vehicles, but yes this would probably hurt the noobs. Idealy the icons would be totally visible by time you are with in 4k of an enemy.
I dont know how this would effect FR hopefully not much.
Anyways just a little somthing I thought might add to gameplay.