I think the biggest reason we can't do concessions in a contractural agreement, amendemnt, etc is that it will bite us in the butt, and be used as leverage for the entire industry. If we go backwards in pay, benefits, etc., so too does the entire industry. And this new "starting line" if you will will be where we all start the race to the bottom from.
Codifying a 50 hour or whatever hour reduction is bad. If that's the language you bring in with you to a bankruptcy judge that's not good. They simply use the hours multiplied by hour hourly rate to determine your value. If your net worth or value is crap you won't well. What's worse is that you are the one who lowered your own value in the BK proceedings. That would be dumb.
Any contractual give-backs are never won back. We still haven't recovered from the 9-11 givebacks. We have NOT taken back what was stolen from us in bankruptcies or liquidity short-falls. It's been nearly 20 years. Still no recovery in my bank account. "Where's the beef?" Glad management has their house in the Bahamas, their fancy Yacht. Glad they got it all paid off and taken care of. Me, I am still waiting for my recovery. It likely will take 3 generations of pilots to come through these doors for the entire pilot group to be made whole. However, intrinsically speaking, as to the value of a dollar., we will never be made whole.
The contract you actually GO into bankruptcy with will matter more than the one you had prior to that date. Best to keep it strong. Max pay to the last day is the only way to help preserve the career for those to come, and to those who return from furlough. it's also the only way to preserve career expectations for the entire profession.