One of my favorite Sanderson books period. In fact, while I don't want to state it too definitively because recency bias is real, I think this may very well be his best individual book to date (it's hard to fairly compare a series to a single novel though). Everything about it was so well-done, I wish I knew more about the behind-the-scenes of storytelling so I could compliment it properly.
Definitely going down as one of the best, possibly the best so far for me. The character focus was amazing. Tress was incredible, sp3 blew way past it for me. I didn't think there was much space for improvement, and wow did sp3 prove me wrong. Can't wait for October!
This and The Emperor's Soul are my two favorite works he's done. I adore his character-focused works and hope that we get another odd project like the secret projects again in the future because I can't get enough of these.