I'm very much enjoying NTS so far. As of now, I would say it beats out elseq for me, maybe not quite as good as Exai though.
I think there's two main things I would criticise:
Too many of the tracks are almost completely lacking in progression, despite almost all of them being upwards of 10 minutes. Go peruse through any tracks of theirs from the last decade and as you skip around the track it's like several completely different tracks all woven together. Used to be the case if you played me a 2-3 second snippet of an autechre track I could tell you the rough timestamp. I think I would struggle significantly with most of NTS in that way. It feels just a tad too jammy. Like they just put a 16 step pattern on loop 4-8 times, and then switch to the next 16 step pattern, etc etc. Glos Ceramic is maybe the worst offender here. It feels like the patterns in some tracks are kind of just bolted together, without particular regard to a sense of flow or transition.
I don't necessarily mind jammy autechre, and certainly the track lengths are not the sole culprit here, as I would say Gonk Steady One does far more than it even needs to remain thoroughly interesting throughout. I think it's just that the tracks here are lacking a certain metamorphic quality, or perhaps to a certain extent lacking attention to detail.
None of that is stopping NTS from being on constant rotation for me though.