I'd be weary of any agreement that changed the language of our retirement. Increase the numbers without changing the words; fine! If we change our retirement language we will end up with another business class lay flat seat debacle... Generally, we need to just understand our retirement better as a whole IMO. We have a lot of guys that just don't understand the superior plan we have now.
Opening up this is a major can of worms. For example; right now if you go on disability you get your 2%/year until retirement. What happens if you agree to a Bplan only retirement? There are so many ways to get completely screwed by the company IMO...
Cheers!