Like the big pay cuts the CEOs get when times are bad, or they **** up horribly, then.
The only way you'll be able to tell if the J* T&Cs are enough is if they manage to crew the expansion...if they struggle pay will go up again...if not it won't.
That is the bottom line for supply v demand. Note J* has not got close to removing 'pay for play' yet. When they get down to bonding for training and hiring kids with 500 hrs you might assume a real pilot shortage exists.
Even at that point don't expect FO pay to rise...captain pay on the other hand, and training captain particularly, may well increase dramatically under those circumstances.
The big hole in the pilot shortage theory, as it applies to J*, is that it doesn't take into account the 1000s of Australian pilots working overseas...many of whom are sick to death of it and want to come home.
That is why you see substantial pay rises in operations like coastwatch and the regionals but not, yet, in
VB/J* etc. Enough pilots are leaving the regionals and enough pilots are coming home from OS.