I also just watched that old TSL interview with 15 year old Nathan. Oh those vintage TSL interviews with Jenny I liked so much before.... I think I have watched that one with Nathan before, but it is nice to watch it again.
Funny thing, Nathan said going into Junior worlds, the nerve hit him right before SP (junior worlds is the biggest comp for 15 year old Nathan back then). And he is way too cautious going into his 3A. ahah, de javu, exactly the same scenarios and words he used to describe his first OG SP situation.
As for in-house choreographer Nadia, I think she has done quite some brilliant work with Nathan, as showed in Chopin and MJ program. Have to gave props to her, not only musically edited really well, choreo wise, these are 2 vastly different genres.
But I do hope Nathan can work with new choreographer and SS specialist in the future though. The reason it to broaden his figure skating vocabulary. Watching Nathan's junior programs with Nadia, they are great, but you will also notice certain range of figure skating vocab, just like every writer will have preferred vocab. My point is that Nathan may already have learned everything Nadia has to offer. As we saw in his programs with Zueva, Shae and Lori, his presentation/interpretation absolutely broadened , he is outside of his comfort zone and learning new stuff on a very fast pace. however, all these choreographers(especially, Shae, and Lori) are not in-house, thus the detectable lost of nuances and details as this season goes on.
also, I think 15-year-old Nathan seems calmer doing interviews, he speaks slower and speak from his mind. And he is sooooooo cute at 15.

:luv17:
personally, SS wise I wish Nathan can have deeper edges in general and more swoosh in his skating (like Uncle Kurt lovely puts it)