My experience in playing against Awings:
They are very good defensively, especially if you add Stealth Device onto them, and stay near asteroids. They are also very fast, and the Boost Action really makes the person playing against them (me, in this case) have to make sure you have more firing arcs covered, meaning I can have 1 TIE right behind it, but after the Awing moves and boosts, it may not have a shot. So I have to have more firing arcs covered to account for at least getting one shot onto it. But, in doing so, I then only do get one shot on it rather than a squad full of shots, so keep that in mind. They are hard to kill, but they also don't do much offensively. True, they have the same attack value as a standard TIE, but the TIEs strength is in numbers. Awings aren't cheap enough to run lots of them, nor do I think you would want to. Also only having only 2 Hull means they go down quickly once the shields are gone.
I see the Awing as another support piece to the Xwing. The named pilots are really good, but like every ship, they cost more, especially after upgrading them. The Xwing is still the powerhouse for the Rebels. The Awing and Ywing are mainly support pieces for the Xwings. The YT is in a class by itself, but still makes for some fun squad building and strategies.
I think Tycho with Push the limit and Stealth Device will be a staple in many squads for the players who wish to play that style. he was the last Rebel on the board, and he was very difficult to kill.
Awings in general will be difficult to play against due to their wide array of maneuvers. They will be tough to try and figure out where they will move, especially with the Boost action.