Still, how difficult would it be to implement a system where skills for all players are developed as they receive playing time without you ever giving them that dedicated attention? Obviously, dedicated training should equate to faster progression, but if those players that are not receiving the dedicated training still saw some progression throughout their career in some of their skill sets?
Well, there's nothing unreasonable about that idea; it has some merit. They could consider it training that the player undertook on his own, separate from team training. Maybe it would be best if it happened in the offseason, as though the player participated in a training regimen on his own or with a private trainer. It could vary widely from player to player, and not be visible until you actually saw the improvements, just like the hidden aggressiveness trait.
And why would it need to be attached to minutes played? Attaching training to minutes played is one of the illogical parts of training that needs to be remedied, not replicated.
And hopefully this wouldn't just become a smokescreen for the thing BB really needs, a complete overhaul of training.