I think putting the kids in at the wrong time can be equally damaging for their confidence and moral . Its a huge step from youth league to aleague.
Leaving a player out also can damage a players confidence.
The brother of Elvis and Pacifique, Ibrahim, has told me many times that young 'Passi' is more talented than Elvis. I played indoor with Elvis and Ibrahim many times, but not Pacifique - he was still a bit too young back then. Where he bloomed was in the local RAA African Nations Cup, playing with his brothers for Burundi (and also many other indoor teammates of mine from those two years ago ).
Not only possibly more talented but has a height advantage over Elvis, but yeah he's talented alright. Adelaide coaching staff obviously clueless, as they were when they passed up Elvis a few yrs ago