Airfield spawn as mentioned is an important start, significantly delays CAS, removes revenge bombing by a significant amount, taking a heavier loadout actually negative impacts your travel time.
Higher SP cost, a single kill or cap should not be enough to spawn a fully loaded plane, SP also needs to add up with every single bomb as to not make the biggest loadout the most valid option.
Removing markers for air, no idea why they get hit markers and scouting targets from several kilometers away when they only have to search in a small 1x1 square most the time, whilst air operates in a massive 360 degree environment and at best we got a general direction with a command.
No intel on capture zones, it’s a giant ‘come kill me’ when you try to capture a zone with planes in the area, they are not on the ground, they should have no way of knowing the status of a zone.
Clean fighters should be cheaper, but the problem is that many can still have strong enough belts to be used as CAS, so they’d need to rework belts to only have a low pen belt and even then they could still be a risk.
SPAA gets the scouting ability to mark planes for 1 minute, also allows for scouting assists to help with rewards.
At higher BRs they should be a basic radar for everything that informs the player that a plane is up and it’s general direction, no military operates without long range radars and having to rely on the Mk1 eyeball is stupid when missiles get launched from several km away, it’s impossible.
Something like a radar that updates every 10 seconds that detects enemy planes in a general area.
Remove attack drones, it’s stupid.
Actual sights for SPAA so you’re not firing third person and getting blinded by muzzle flash.
More proxy SPAA or vehicles with AA capabilities that aren’t Russian.
Never allow planes to outrange SPAA.
And this one doesn’t even consider the issue that you cannot hit targets at close range either.