How much do you trust GD given his track record on these things?
Dr Phil has a saying that goes along the lines of when he's cheated with you and left his wife, you'd be insane to think that he wouldn't do EXACTLY the same thing to you.
Some would call it poetic justice. I'd call it yet ANOTHER aviation industrial relations tragedy.
For the J* guys, I acknowledge now (as I did back then) that the gun was at your head when the A320 came along. If you didn't put forward a good case, your jobs were going- or at least to WA! That gun is NOT there now. You guys KNOW that you are crewing 24 A320s. For goodness sakes, at least realise the GREAT position you are in and if you're going to crew an aeroplane with double the number of seats, at least START with an ambit claim of double the money. You have NOTHING to lose.
Of course, you can take the sad and short sighted option that even a 10% pay rise from the A320 is more than what you are getting now and so why not take it!