Well, if you watch the show, that beam sure seems to sweep across a lot wider arc than the basic 90 degrees, and a 180-degree arc still leaves their aft and and part of their flank open.
Hull 6, Accurate or Twin-Linked on the weapons, and a 180-degree fire arc and you've got a pretty winnable fleet.
Not sure what to do with the fighters. I've played with the idea of upping the Hull to 6, giving them a 4+ dodge, and making them 1 per Wing, but I've no clue what the impact of that would be. It would certainly follow the canon as expressed in the AoG literature, though I'm waiting to get my hands on the new Mongoose suppliment for their RPG.