Generally, no. Missiles are already not typically cost-effective in a competitive environment, and effectively increasing their cost by 2 doesn't do missile-carrying A-wings any favors.
However, there are two missiles that might break that pattern. The first is Ion Pulse Missiles:
These aren't terribly impressive damage-wise, with the same three dice and capped damage offered by the Ion Cannon, but they definitely offer cheap control. And that means for the highly maneuverable A-wing, they offer a way to force an opponent to fly predictably for a turn--presumably while the A-wing plots a loop that will take it into a flanking or even tailing position.
The second is the Proton Rockets(?) that appear to be included at the upper left of the card fan. We don't exactly know what they do, or what they'll cost. But as I've mentioned in other threads, it's reasonable to infer that they created with the Chardaan Refit in mind; accordingly, they ought to be something that FFG's designers and playtesters thought was worth running on an A-wing even with the extra opportunity cost presented by the Refit.
So it's not quite time for despair yet.