This is a good and reasonable idea, which has been suggested before in various forms, but not acted on by HTC yet.
Here's why it is a reasonable idea. With GVs you have the "furballers" and the "win-the-war" types, just as with AC. GV "furball" mode involves maneuvering against and shooting at opposing GVs, analogously to AC furballing, and including a large "stealth" element as well. The main difference from AC furballs is that GVs are an order of magnitude slower, so the furball takes a lot longer to play out. AC being faster and more powerful short-circuit this process, especially if there is an airbase too near the GV battle. Even if a relatively/completely AC-free GV area is supported by HTC, people will continue to use GVs to support the "win-the-war", base-capture behavior on the remainder of the map. Thus AC will still have plenty of opportunities to attack GVs on the remainder of the map. Thus the Forum posters who so strongly oppose this type of suggestion have nothing to worry about.
(In a related comment, the center island in Ozkansas has been entirely Rook for a couple of weeks now, thus precluding its use as the game's premier GV area. The island will likely remain out of service until HTC resets the map (if that ever occurs). This was a good GV "furball" area, possibly as the air bases were relatively distant from the action, and possibly also for other reasons. The 3 air bases on the Ozkansas center island should be set to uncapturable, and that would fix the problem).