The kid has a good 6th tool already; in travel and HS ball, the last 3 HCs he's had, in order, have been a former NCAA head coach, a former AAA player, and a 3x former HS league state champion coach. He's gotten and is still getting excellent coaching, and he's a strong student of the game.
... but, I've come to believe (right or wrong) that these metrics are the baseball equivalent of the SAT. If you don't score a 1500 on the SAT, then don't even bother considering the Ivies, regardless of how strong a work ethic a child has. If you don't throw 90 across the IF or hit 100 off the tee, then don't even consider D1. That sort of thing.
And it's the total lack of improvement on those metrics after months of work and size increase that exasperate and stupefy me. I appreciate all of the responses.