At 1.5k a plane can easily spot a tank moving in the open. Unfortunately, at 1.5k the plane also easily sees GVs that are deliberately hiding under trees, inside barns, hangars, and what have you. You keep arguing that a plane would always be able to see a tank easily, even under trees, from a mile away (which 1.5k is almost). I respectfully disagree. Most of the tank paint schemes seem to be expressly designed to aid in camoflaging the vehicle, and a camoflaged Tiger, in a grove of trees, should not stick out like a sore thumb to a plane a mile away.
Like I said, the icons are limited. IF it was possible for the icon to be invisible when the airplane did not have a clear line of sight to the tank, that would be fine with me, however, I don't know that is possible. I know that getting rid of GV icons would be the poorer alternative. And the nature of the "tree cover" we have in AHII is thick enough to form a really solid canopy. I have some experience looking for lost cattle/stolen trailers and spotting game in a light plane, in East Texas. Know what that country is like? Animals can sometimes be easier to spot from 1000 feet above than they are at 50 yards down in the brush with them.
And the range icons don't make it "easy mode" divebombing any more or less than they make it "easy mode" gunnery in A2A fighting. Take away icons and that would be the *easiest* problem for the divebomber to solve, either through gun-site ranging or simple reference to the altimeter.
All you need to potentially take down the "bomb tard" is one guy in a flak or fighter aircraft. You don't need a "crew". Lone tanks are vulnerable to bombers/attack planes...bombers/attack planes are vulnerable to fighters and flaks...flaks are vulnerable to tanks...its a circle of life kind of deal.
And my thoughts about what beneficial changes could make GVing more fun are really fodder for another topic.