They are not enough to make up for potential realistic stagnation and fleet consolidation, if it comes to pass. We are stagnate right now, consolidation is TBD.

A 25 y/o or 35 y/o new hire should have a nice long run in the left seat of something. A 45+ plus new-hire? Not strictly assured.

More likely there will be some growth, and current payscales facilitate early retirement for those who want it so most likely the upgrade time will be in the 10-12 year range for a while. But if anything goes wrong it could be worse (AZ, 321/717 dumped without one-for-one replacement).

If HA has massive retirement numbers (like AA) that I'm not aware of, then I'm completely off base.