To me you are talking about strategy/approach rather than foundation. Strategy can simply be changed if they make up their mind to do so. Foundation is something totally different. I'm not sure why you think it's too late for him to change his strategy, that is, to stop doing a different layout each time.
I remember an interview when Frank Carrol talked about how it was like when he first took on Michelle Kwan.
He said, she was all jumps and had no clue about training.
He had to teach her how to go about her daily practice, and set strict rules on when a jump can be incorporated into a program, etc.
You can call it an approach. I view these as the foundation to success.
Why I think it may be too late for Nathan to learn all these?
It is because it is always easier to teach a younger kid. I am not saying it is impossible, but it is just so much more difficult for an 18 y/o than a 13 y/o to change.
