For us to be willing to change our pension, there would have to be a significant benefit. Not, "The sky is falling, we can't afford it for you (but we can for top managers)". Or, "We know you are just dumba$$ pilots who like to fly, and we can talk you into anything".
Why would we renegotiate unless it was significantly better? An increased B plan, particularly one that is capped, will do nothing for many people. Nobody is going to agree to a frozen pension for a small B plan increase. You might think you have 15-20 years left, and something happens that grounds you. I would think they'd have to improve the A plan for those on the property for anyone to even consider it.