I think I get the idea. A long missile lock, forcing you to be either a slow sitting-duck, or a trench flying Laser dodging maniac.
it could get a bit one sided, because all the imperials would have to do is park a heat generating Vehicle next to the vent with a pack of engineers to repair it as the attacking wave passes, unless its possible to prioritize the lock function, which again could get irritating as you're trying to kill a fighter, and your missiles decide to switch targets on you halfway through the flight.
and grudgingly, I'd give Hey's idea merit too, cause it gives the Ywing a bit more potency, and I'm a big Y wing fan. Xwings and Awings are all well and good for hit and fade, but the Y covers all the bases. slowly.
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What do you mean its not chocolate?