BALPA have a thoroughly sensible policy of discouraging pilots from volunteering to do extra services for nowt. Nothing to do wth rights and wrongs of PFI, just plain common sense. It's very likely they'll get the numbers needed, just not for nothing!
A commendable BALPA stance, I would agree.
But if you don't have you assets in place, how can you build your business case?
And just how would this 'load of money' benefit the Treasury?