The Idea I believe is:
Make it harder for aircraft with questionably accurate and loadouts to easily destroy a GV.
create a purpose for spotting GV' and thus directing the ords laden aircraft. (hmm the storch)
Seperate the GV fight from the air fight. How often does everyone complain about "bomb****s?" While this will be diminished, it will still exist as a threat, but we will no longer have to deal with the :ahandplayer upping a P47 just to kill the GV'er that repeatedly killed his tank, so that he can brag on 200
The GV's themselves in beta are just as visible as they are now, but only with reduced icon ranges. I identify many of my targets before icon range (particularly if they are moving) Shorter distances would require that I CONFIRM what my target is (like not a wirbl) and then make sure I do not lose visual while I set up an attack run. That sounds fun to me!
IMHO The GV'ers can GV better, and the anti-tank guys have a real challenge, in a fun way.
The downside would be a wirbl opening up on an aircraft far before it can be spotted, which isnt bad except i can see this exploited, particurally in purpose of "vulching an airfield" Then again after this happens once, it gave it's position away
Then again, with a storch's better viewing distance, this would make that pilots transmissions all that more valuable.