I work at PSA and care not one bit about the flow. It's currently at 10 years and I don't see it getting any quicker. Yeah, it's a backup to my backup plan. But I plan to get out before then.
As far as upgrades, currently guys that have been here 2 years are upgrading, but the amount of pilots hired within that time and mid 2015 is massive. I have been at PSA over a year and a half and have 230 FOs between the guys that just upgraded and me...plus the senior FOs waiting to upgrade to hold a line.