As mentioned, a-wings have plenty of ways to boost their offense.
Most obvious is prockets, but with the double EPT (assuming first is PTL), you can add crackshot, juke, or outmaneuver to help your offense. Not to mention you can always TL and focus if you won't be shot at. Something interceptors can't do without taking targeting computer or getting a lock from another ship.
A-wings have basically gotten 4 major fixes already, 3 of which came with rebel aces.
1) Prockets as a viable and cheap missile to use
2) Chardaan to reduce your cost if you don't want missiles
3) Test pilot to get a second EPT
4) Autothrusters
So I highly doubt there will be any further fixes for a-wings for quite sometime, other than some new EPT's that might be interesting.