Limited damage is your biggest problem. You have a pair of one-shot missiles, but after that your firepower is almost nonexistent. So your ion cannons aren't really setting up kill shots and once they go down your a-wings probably aren't enough to win the game. Drop the missiles on the prototype (it can't use them very effectively anyway) for
PTL on Jake (mandatory on a-wings) and swap his cluster missiles for a proton rocket. Now you've got at least one really powerful shot against high-agility targets, and with the points you save you can put R3-A2 and the title card on one of the y-wings to make your control element a lot scarier. And with the rest of the points you can upgrade a y-wing to a b-wing with an ion cannon and tactician for even more stress + ion and the ability to use a 3-dice primary weapon when you need damage more than control.