Seniority is good for some, bad for others. Rarely First or Second Officers complain, but usually senior Captains do ....
I wonder if the chat landscape has changed for some of the people who were pro seniority lists?
I can assure you that the senior Captains at Delta, United, American, Air Canada, KLM, Lufthansa. Air France, Quantas, and so on, whom are sitting on top of the salary scale, avoided layoffs, are exactly on the equipment they bid for and fly exactly the roster they bid for aren't complaining about seniority.