What about a generic astromech or modification that gives you a chance at causing damage to a ship if they perform a boost or barrel roll within your firing arc? It'd give you a way to score damage on those arc-dodging aces, and would represent the ability of the X-Wing and E-Wing to bracket their targets with their linked laser cannons.
Putting it in either the Astro or Mod slots limits the value for Corran Horn. Mod slot could also give value to B-Wings, and you could keep it from becoming too widespread by restricting it to small ships only with a printed attack of 3 or higher.