Fancy a career forever looking over your shoulder or being killed in the rush for the most modern fleet ?
I think the ring fencing of the 787/350 fleet is a game changer...and I do think it's highly unfair to be potentially CR'ing pilots who might have been online for some time whilst protecting those who perhaps haven't.
But OTOH there might now need to be some recognition that there has
always been a danger, even in BA, of the practice some have indulged in- i.e. hanging on in a slowly shrinking fleet because they didn't fancy another course "just yet", wanted to optimise their move for Fleet seniority/destination selection purposes or simply because they wanted to continue to fly an iconic aircraft.