Originally Posted by FlyinCat

There's an issue with this. If you bring the regionals in house at a major, it will stop other regional CAs from going to that major. For example: Let's say AA brings PSA in house and staples them to the bottom of the seniority list. A CA at a different regional, maybe Republic is looking to move on to a major. They won't look at AA because they won't want to start at the bottom of the list below the CRJ guys. You'd have to give them some sort of seniority credit to make that remotely attractive. Scenario 2: Someone at the bottom of the CRJ list who was hired at PSA right before PSA joins AA. Option is to stay at PSA and ride the list up to where you want to be, which could take years, or jump to United where they can start in a bigger plane with a bigger schedule sooner and not be so far down the list. Obviously they likely would not stay. I don't see a solution to this problem unless you guarantee some sort of seniority portability, which seems unlikely. It's going to get messy, and airlines will have to either be creative in poaching other companies' pilots while keeping their own, or come to some sort of (illegal) backdoor agreement to stop the poaching altogether.