This was always a problem with HotAC. The A-Wing is definitely not an "upgrade." Especially not worth 5 XP (Predator, one of the most valuable EPTs in the game, is only 6, by contrast). The B-Wing is perhaps a slight upgrade, but again just slightly over the Y-Wing. Is it worth 5XP? Probably not. It isn't extremely better than a Y-Wing. It just plays different.
The A-Wing was hilariously entertaining to play at like PS7 (1st Ed) when you've unlocked PTL, Jake Farrell and Outmaneuver, but in the end it's just a 2 Attack fighter with a one shot of Prockets. Nothing will hit you if you are doing it right, but you're still really just zooming all over the map looking for damaged TIEs to poach, and not actually very valuable to the team except in one or two missions where zooming all over the place was actually useful.
For a 2nd Edition, I'd recommend giving it a Tech Slot like the RZ-2 has, and (obviously) using the improved 2nd Edition Dial. At least at that point it isn't a complete downgrade like it was in 1st Edition. There's a reason Prototype Pilot was only 17 points but the Rookie Pilot X-Wing was 21. The X-Wing is a better ship, in terms of how X-Wing and HotAC plays, all around.