I think the answer may simply be a Y-Wing/Bomber only modification.
Automatic Reloader 2pts ACTION: Reattach a secondary weapon which this ship has discarded this game. Then discard this card.
loading up on multiple ordnance is generally seen as a bad idea as the ship cost becomes too high and also the ship has the chance of being shot down before it gets the second missile off. This would give a large reduction on the cost of getting a second shot without being infinite extra shots.
saying that I don't feel Y-Wings are bad, they are definitely competitive but their role may be a bit limited.
Edited by Rodent Mastermind