I mainly play the Normandy campaign and I have come across games where on both sides the bombardments and ground attacks are excessive and extremely annoying, even with a good fighter pilot in the air the spawn of the bombers is ridiculous, not to mention that the resistance of some bombers and the damage in general of the planes is quite unbalanced (including that of the AA) they could perfectly bomb 2 or 3 times with a fighter in their 6 shooting at them all the time since the recharge and spawn point is too close .
I think this could be solved by replacing the recharge in the air with an airport and moving it away both (spawn and airport) to about 10 or 15 km, in this way forcing the pilot to think when would be the best time to attack on the ground, more strategic and not just see how many kills you can take before they take you down.
A second fighter would make the armor more interesting in the air and I think that it would not affect things on the ground due to its low ground attack power, however it would improve the experience in the air, being able to raise cases of escorting the bomber, preventing ground attacks enemies, air supremacy etc.