I'd personally like to see the corvette class made into anti fighter picket ship, rather than just a cheap moving hp ball with quills it sits in in the game when the other ship types are introduced.
Tbh, I want fighters on every ship, not as a weapon per se, but representative of what would plausibly be included in a fleet in space. Most Sci fi tropes are present but the lack of the intermediary craft central to space combat across most Sci fi world's, that is the small fighter craft, makes me sad.
Could be the basis of a combat rework, each ship has a contingent, you select what that contingent is made of, be it fighters bombers whatever, and they're part of the combat potential of the ship. Like how auras are on spaceports, something simple like 1,2,3,4 wings or whatever you wish to call them on ships, to represent their presence.
Ship vs ship combat would remain the same, but you could have fighter superiority buffs to combat if you have better or more fighters good pdfs coverage etc.
Problem 1 with this would be it removes the hangar bay completely (which I don't mind, it's about useless as it stands now) and one less line of tech to research