Flow should be a plan B, not a plan A like most here are thinking.
PP are holding for Flow, because they are close to go. Most are in the early 30s and will have a great career. When the last Envoy NH flow will be around 3,000-5,000 numbers below the last PP. Those saying the PP had bad timing are wrong. Maybe a 23yr old will flow at 28-29, but will follow that PP for around 25-30 yrs.
28 + 30 = 58 before you get that PP position in AA.
Any new hire should be flying their butt off, get the upgrade and start looking for a job somewhere else. Anyone hiding on reserve is doing it wrong.