Any retirement calculation requires a lot of assumptions to come up with a single number. Not least of which is what return you can get on your own investments. Or what kind of interest we would negotiate into the MBCBP. If it makes you feel better, I can edit that post and remove all the assumptions I used. It wouldn't change the result.

I'm not advocating for or against. That's just what the math says, making educated assumptions and controlling for as many forseeable contingencies as I can.

I also am not one who generally uses the phrase "What's in it for me????". My retirement isn't mutually exclusive of someone else's security. Even if nothing changes and we operate under the current contract for the remainder of my career, I'll be able to comfortably retire in my early 50's. Anything on top of that, whether MBCBP or just an increase in rate, is gravy. I won't vote for any reduction, but I'll gladly give a couple percentage points improvement (say, 22% instead of 24%) if it means 7000 guys who gave up their pensions get to be secure in their retirement.