I should start off by saying I appreciated your post, and found it thoughtful. I think the voice does carry it for many.
But I strongly disagree with this bit:
Another reason is that the reader is more interested in lingering in the world than necessarily following and solving the plot. Don't get me wrong. The reader wants an eventual confrontation with the Chandrian, but maybe that's not all of (or even most of) the reason they bought the ticket and got on the ride. There are different types of stories. Some focus on plot catalysts while others exist as an immersion into a milieu. I think a lot of writers today try to follow guidelines and rules, and that's great, but I think it can force storytellers into thinking about a somewhat narrow approach to giving readers what they want. Clearly, there are things readers want that don't fall into traditionally suggested rule sets.
One of my favorite novels is all dialogue. No narrative. Every line starts with a dash. Another one of my favorite books is a surrealist fantasy novel with very little plot, near-constant headhopping, and minimal explanation.
I just finished another book yesterday which had multiple pov in first person and explores a fictional Plato's Republic, set up by a time-travelling Athena and complete with kidnapped Sokrates. It is entirely didactic, has basically no plot, and is just an excuse to muse on the Republic's viability while stuffing as many fictional Socratic dialogues in there as possible.
The point is, I like a bit of weird. All character and no action? Sweet. Long-winded ramblings sandwiched with character dumps? Sure, if the language is pretty. Unconventional narrative with bizarro structure? Hot damn, let's go!
NotW didn't fulfill that for me at all. For a start, I can't see how it's particularly different in terms of structure. There are bits of it which read like Rothfuss has printed out a checklist of Hero's Journey and methodically ticked each bit off, then tied it all together with some pretty words. The narrative is completely formulaic. To clarify, formulaic isn't a bad thing by default. Sanderson is very formulaic and he makes that work (for me). I'm highlighting it only to combat the suggestion that NotW deviates significantly from standard narrative structure; I can see no evidence that it does.
Even if it did, similar to the examples I mentioned above, it's not sufficient to go off the rails and say with pride, "Look wot I done!" In
Kiss of the Spiderwoman, writing only in dialogue mimicked a film script, playing into the narrative of two guys telling each other stories about films. The style itself is a commentary on writing, an exploration of dialogue in novels.
In
The Just City, I'm occupied by philosophical themes being discussed, and character microtension.
Because there is something to replace those traditional plots, and a reason for the derailment, I'm fine with those books, and even enjoy them. I didn't find anything like that in NotW, though. The world was okay, but nothing particularly unusual. The writing was standard, with a modern slant (but not revolutionary or mind bending). It held, for me, no deeper commentary beyond the surface story.
I accept others may feel differently in this regard, but as before, I highlight that reasoning only to counter the suggestion that people who don't enjoy it are put off by things being too unusual. I like weird, and found NotW to be very normal indeed. Again (in case the point gets lost in my waffle), "normal" is good too, but in that case I'd judge what I regard as a conventional book on conventional grounds.
Ugh, and now I sound pretentious. But that's another reason I like Sanderson I guess; his books keep me grounded.