Interesting that the concessions they wanted from Eagle didn't effect any pilot on the property. It created a lower pay scale for anybody not even on property yet. Would have provided Eagle at least 60 airplanes and the associated 300 plus upgrades. They told US/AMR to pound sand.
The pilot shortage is here; they need you guys more than you need them.
Do the right thing for the profession and say no... When the next one says No too; they'll get the hint. Poverty food stamp wages are unacceptable.
What good are more planes when there is nobody to fly them.
Stop playing by their rules. The rules are changing; and they're trying for one last grab while everybody is scared.

Sounds like they're offering you a B scale for anybody under 12 year seniority. Heck, Eagles didn't effect anybody in property and they had guaranteed flow and more aircraft.
Your TA is even worse than what they offered Eagle. Talk about lowering the bar.

Grow a pair. Short term pain for long term gain.