I don't know about that chart "Years of Service at Flow". It's just like the 2.5 upgrade and sub 6 year flow RW predicted in May 2016. It won't happen unless the flow through increases for post protected pilots. The 2.5/6 would never of happened without the pay bump Envoy gave NHs in Fall of 2016.
I could see the projections working but not at the status quo we have now. The closer pilots are to flowing the less likely they are going to leave. Attrition at the top isn't going to be as much as they are calculating.