I sometimes wonder when it comes to longevity based pay at the regionals if it would be better for the pilots to just have a 3-5 year pay scale? Don't reward longevity with pay, just schedule. But if the point is to get time and move on then don't reward staying. As to the pay, make it somewhat around the average, higher than years 1-5 but lower than years 13-20. Maybe it'd help mitigate being undercut in this asinine whipsaw system.
Sorry typing while walking...