these are more of tweaks.
A bit more pursuit range on missiles, as in they take longer to fall off. Lets say a 5000 lock range but will travel a total of 8000 or something (for example not actual numbers) I had several instances of fighters just outrunning missile to their hard fall off without any significant maneuvering on their part. I'm not saying IRL reference is the move, but missiles engines will burn out not terribly long after launch (depending on type) and they still travel with their remaining momentum. however the sky streaked with white arcs of smoke looks cool, so maybe just more pursuit range.
Slightly smaller hitboxes on vehicles, it can be frustrating when hitboxes are pinpoint accurate, and I don't think they should be for these types of games but just a little smaller to make the gun feel more rewarding for accuracy.
Longer burning linger time on shot down enemy aircraft, I think seeing them plummet to the ground or just comet burn for a while looks neat.
the general purpose bombs should do a little bit more damage closer to their blast/impact zone, so if you drop one directly on something like a bunker it will kill it but it may take 2 to destroy if you miss the direct shot.
If I think of more I'll drop more.