I repeat. They will ICUS cadets to command just like Skippers and Qantas and every other operator can do if they so wish. As for whether enough of the existing line captains would sign up to be trainers, of course they will. If not for the 5% increment, then to add the qualification to their resumes.
I am not suggesting that this is the best way to acquire experience, but hey, it has worked in many other parts of the world for long enough now to know that if it is done properly it is quite safe. It will work here and we will see a lot more of it in years to come.