Back in the mid 80's, I remember that FJ pilots needed to be second tourists to be pretty useful in role. Sharp second or third tourists would normally provide the QWI raw material and become really useful in their subsequent tour after qualifying. So what? Well, the QWI's were often also promotion fodder, moved up the ladder fast, and always in short supply. Consequently, overall standards of performance in the air by a Squadron, relied heavily upon the older, non-thrusting but experienced dudes. I may be wrong but, if cost is going to cull a greater percentage at around 35 yo, I can only see a lower future level of experience and ability!
OAP