Actually my first post was filled with beer and sarcasm.
You (Too Beaucoup) may actually be interested in safety, if that was your intent with the first post, and that's great. All airlines preach it.
But how many CEO's practice what they preach?
We would all only fly 5 hours a day. 3 days a week if it was economicaly viable. But it isn't so we have FAR's that have us legally working for 16hrs. OK our contract says 15. I have gone up to 15 hours, 4 times last year. It isn't safe. But it's legal. And that is all that the airlines care about.
One seniority list would be more expensive so it isn't going to happen.