I'm not really sure there is just one easy "fix" to the GV issues. Seen too many glitches and bugs over the years to invest much time playing in them, especially once I caught on to the glitches or exploits. Perhaps it's just part of the game engine, terrain software, etc.
Myself, I believe the GV guys have gotten too used to the way things are/were.
I can remember when they dumbed down the GV icons, back in AH2. It made encounters with GV's kinda risky cause you couldn't see them til you were in their range, and lots of times by then it was too late........you'd get smoked by a Wirb/Osty or some guy firing an HE round into the ground and you'd die from the blast splash.
With AH3 and the new terrain software, and their ability to hide in bushes that shouldn't hide them........nope......I try to avoid them if I can, unless it's a last ditch effort to save a base or town from being captured. Otherwise, I find somewhere else to play, their ability to hide, fire through seemingly solid objects, drive into buildings, etc is just not what I prefer to call a level playing field.
If HiTech addresses it, and I hope he does, it will be a welcome change to the game dynamics.