To me, GV's seem like a good part of the game. If you don't like them, then you hardly ever have to interact with them, so it doesn't matter much whether there are GV's or not in that case. (Well, unless one's opinion is that if there weren't GV's, then GV drivers would instead be in planes, making more planes in the air. But I'm skeptical of that thesis.) Otherwise, they are fun for some players (the ones who like to fight in them and the ones who like to have things to attack on the ground). I like an occasional sortie in GV's and occasional sorties in Il-2's.
As for 88's, I think I've been hit by one maybe once. They seem to be almost no threat for fighters and only a small one for bombers unless they are at low alt.