Just thinking out loud here. Aircraft in the game can completely avoid radar bar detection under a certain altitude, but it still flashes the base. What if GV dar bar detection would trigger only if the GV is travelling above a certain speed?
Here's my thinking: GV dar signals when a GV is on the ground. It kind of mimics what some folks have mentioned, like dust clouds, tracks on the ground, etc. We can't do large dust clouds and tracks in the game, but GV dar kind of acts as the same signal ("hey, there's something down there in that 1 mile square" or whatever size it is). What if we took that further, and killed those signals when the GV was shut down or travelling under a certain speed.
Just a thought. Maybe that's a happy medium.
Final thought: imho, I can't honestly say which iteration of GV dar is/was/could be better. The ultimate goal of it should be to increase interaction, yet not cross the line into crushing how the game is played based on what you choose to fly or drive. I don't know if I'm exactly 'sad', but the current evolution will likely end the era of the long range GV mission, which some squads were well known for. On the flip side, it gives folks like me the exact spot to be if I want to lock horns in a GV with a GV. But it does seem tilted right now against the GV.
Also, the notion of "good, it should make the GV guys get up in the air and fly" is ridiculous.