Am I missing the point here? (Quite possibly).
It strikes me that BA wish to remove at a stroke all the disparities in pay, allowances, and pensions. These exist in the pilot and cabin crew workforces, and have been a bone of contention with management for a long time.
These disparities may also exist in other parts of the BA workforce too. I imagine the same objective applies i.e.a level playing field with regard to "competitive" terms and conditions .
I am not insinuating that this is a good thing, nor otherwise. It seems that many of the suggestions and arguments being put forward here ignore these sometimes gross differences in pay and rewards for employees doing the same job.