MANBLK
let me try. If BALPA win the fight and all new joiners to open skies are on the mainline list each and every on of them will have the right to bid for a position anywhere in BA. If thier seneroty is high enough they will get it. This includes (subject to passing the course) LHS of any fleet. How is that a negative?
PL will not be crewed from within BA there is an on going demand for 150+ new pilots a year in mainline. I sincerley hope the entry requirments and selection process for PL will be the same as mainline.
In short if you join PL on the mainline list you are a BA pilot with all the rights that come with that.
I hope that helps I am sure someone will post a better reply soon.