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... and good things will happen.
IMO, this has been the problem with the Ms for most of the decade - that too many decisions WERE made based on finance and PR and running preset plans regardless of talent.
You want to develop players? You do what you believe is best FOR THE PLAYER at each step, (barring those situations where you're forced to do otherwise - mainly injury).
IMO, the worst thing you can do in a "youth movement" is promote youth just because they're youth. You promote when you think players are ready to be promoted. You'll be wrong sometimes, sure. But, you try and learn and do better next time.
A sign of player-specific development is that it will appear much more chaotic.