I reckon some of you are looking at this upside down.
Metcalf is not a lesson on why we should retain promising young talent. On the contrary he is a lesson in the value of signing talented players after they have already done an apprenticeship in NRL and are just about to ready to excel. He's an example of the fact nearly all players take a few years to settle into first grade.
He was with Blacktown for 3 seasons and only managed 4 games. Only now is he finally comfortable with the intensity of NRL - 3 years after leaving Manly.
If he'd been taking up a spot in our top 30 all that time while not ready for first grade it'd be a waste. (Not to mention we had a younger, better 5/8 earmarked for NRL)