Here's a wild idea:
Let the company go ahead and design their "perfect" PBS, with all the union input they say they want. Then, when it's tweaked to perfection, run it in parallel with our existing system on a "what if" basis for at least six months BEFORE the amendable date of our upcoming new contract. Sure, that'll delay it one contract cycle (at least!), but if it's so great and the trial period convinces everybody it'll work like the company says it will, it should be a shoo-in for the NEXT contract.
If it falls on its face, well, no one can say we didn't at least give it the ol' college try.
What I will NEVER agree to is to give the company a blank check and hope everything turns out well. Hmmm... have we been down this road before?
For me, there are a few issues in which any concessions will get an automatic "NO" vote regardless of whatever else is in the proposed contract.
1. Retirement
2. Vacation
3. Medical/disability insurance
And last but not least:
4. PBS