Sigh..........on one hand I can kinda see the OP's point, but on the other hand, the arena is about combat, or it used to be.
Take away the "soft skinned" vehicles armament, and he might have a point. It's the whole notion that these guys want to be able to affect game play, capture bases, and if possible avoid detection (and therefore combat) that makes me oppose the idea.
They can already hide under trees, can see aircraft coming from what, 10K, 12K away? Yet the aircraft don't get an icon til under 1.5K, and therefore have only a split last second chance to maneuver for a shot.
My thought would be to do away with the GV dar completely, but at the same time, increase the GV icon range to 3K max, and at the same time limit the range at which GV's can ID an enemy plane to 3K.