I was thinking of something a bit different, like a mannable 88mm flak battery comprised of 5~10 cannons spread over a loose area, and a central "command station" where you would be able to zoom and look at the sky with a "binocular" function.
The players will control the guns a bit indirectly, they will be able to set the detonation altitude, and use the stick to move the cross hairs to aim and point at a target. And when the player fires, the 5~10 cannons will fire with a random dispersion pattern that is grouped loosely around the aiming point, each shell with a blast radius. Of course, the 88mms will be much more slower to reload than the 5" guns.
In this sense, placing these batteries around key places would be very dangerous for slow and predictable targets such as bombers at low alts, but the 88mms would be much too slow to respond to pick off individual fighters, like the 5" on the fleet guns can, especially if they are maneuvering and are at alts over 10k.