Come on Krismiller nothing make sense in QR, they do the total opposite of the human been logic so lets do it this way; i agree with you the sweet spot will be 40 yrs old but lets think as QR management.
They will rehire 60 yrs old + exA350 to the 787 fleet,
ex777 Cp to the A350 fleet,
SO that started there training on 320 straight to 787
FO ready for command upgrade on 320 will go to the 777......
This looks more like QR logic to me. And the 40 yrs old guys will be the last ones.
If the world send a rocket to the moon throught the sky, Qr will try to find a way to go to the moon in a submarine through the ocean, the funny thing is they think that the rest of the world admires them for been so genius.