Delta and ual own about equal share of rah so to say rah is owned in part by aa even at 25 percent is wrong. If theres a problem your jumpseat committee calls apa jumpseat committee and try to work it out. Since it's a computer issue the your rah jumpseat committee approaches aa, then your mgt approaches aa mgt, etc,.
Since you fly for 3 different brands you will not get priority because no one is going to pay for the program to track rah pilots flying aa flights. It's that simple. You think parker cares, please. I'm surprised that bb even cares as per your fom change, pretty sure he was not told of change.
You nor I have any control over gate listing of priority, its aa flight, its aag gate agent, they will follow aa policy.
When it's a rah flight scheduled as a rah flight sold as a rah flight advertised as a rah flight then feel free to implement what ever your heart desires.