For you guys/gals waiting for courses a tough spot to be in but this has been coming for a while. The younger you are the better. Keep in mind that this is now by far the best and likely most secure employer in UK aviation with what will be a massive hold on LHR for years to come. The roster stability and other benefits (not mentioned here) are still intact.
It has been made clear that pensionable pay scales will not be touched so you and all BA pilots currently in the defined contribution scheme will have the same pension contributions over a given time. This is important.
Congrats to all those getting in. There will be plenty more recruitment going forward and many more large aircraft arriving to be crewed.