I think Nathan should be very competitive this year with a more stable 4S.
4Lo, or crazy combos won’t likely be seen until next season or maybe not until the Olympic season. For this season, it would be great if he can maintain what he was capable of last season, plus hopefully the 4S.
I don't think that's realistic. Maintaining four different quads at once with so little training time and no coach at your side to tweak details and make necessary adjustements sounds impossible.
He was already struggling with doing both 4Lz and 4F successfully in one program.
Also, adding 4S equals a 5 quad program, unless he's thinking of doing only one 4T and repeating two triples, possibly 3A? Which would only make sense if his 3A is more or less stable this season.
IMO he doesn't have the stamina currently to pull off 5 quads, unless he's fine with potentially messing up or URing a few jumping passes.
To me it looked like he was already struggling with 4 quads last season. That second 4T in LoA was consistently of a lower quality then his first quads and he was barely eking out that +1Eu+3S in the end.
I think he should stick to what he's done last season, work on the consistency of his 4F and 4Lz and cleaning up/improving all jumps in general (easier said than done of course, lol, that's pretty much the plan of every skater right?), especially some of his landings, but that's partly related to stamina too, I guess, and there's not much he can do about that while at Yale.
He should also start working on incorporating 4T more seamlessly into the program. I don't expect him to be able to do that with the more difficult quads such as F or Lz, and frankly, I don't mind say two jumping passes with a more obvious/longer set-up, when they're such big and difficult jumps. I find that kinda exciting and rewarding to watch, because it creates a certain tension and a feeling of anticipation in a program. But that effect wears off after the 3rd or 4th time

. And by now he should be comfortable enough with the 4T to do it with minimal preparation time.