I like the idea, but it would be difficult to add. Imagine a ship that is in fierce battle and turns repeatedly, the warning could get quite annoying. Much like "Base under attack".
I like it for landing- Nothing worse than having 2-3 kills and low fuel, in a short range fighter, come in to land or refuel(which is why I think HTC lets planes back up on CVs), and someone turns the ship as your landing. With no warning, can cause fatality. I've even seen it done on purpose. Someone turns ship as another is landing, Just to cause them to crash and lose their kills.( Man, what great squad we had! TFC)
A_Clown