A couple of random thoughts...
When I heard about a world so afflicted with storms that everything living had to shelter to survive, one of the things I wondered about is food - the humans in this world are clearly living above the subsistence level, but what's the source of their food? It seems like the topsoil is mostly gone, so intensive farming would be impossible. However, enough plants seem to have adapted that basic grain crops might well be practical, though it's hard to imagine that working above a subsistence level without some kind of special locations / technology that can protect the soil and the crops from the intense storms. Foraging would be similarly difficult. Of course, there's more to food than crops - I wonder how much of the world's food is fish and seafood in general? The seas would likely be reasonably protected against the storms (though hurricanes can do a lot of damage), so those living by the sea should be able to make a living off it. Maybe raw fish would be rather popular though, since if plants are scarce then so would be wood and hence fire, unless there is some magic alternative. And then, on page 13 we learn that "Emeralds were the most valuable, for they could be used by Soulcasters to create food"! Magic created food? Well, that sure can change some things though I'm sure there's some complications. But, if they're the most valuable then that still implies that food availability is a major problem.
On a related note, Shallan has been chasing Jasnah for nearly 6 months but during that time has only gone to 6 different places where Jasnah might be during that time. ie on average 1 month's travel is required between what are presumably major places, which also gives a feeling of a sparse population to me. Though maybe I'm reading too much into things.
I like the imagery of Shallan having to strain her neck looking up at the top of Kharbranth. Rather than simply describing the height, it gives the feeling of looking up at a skyscraper from the base.
Maybe I'm being too picky, but I kinda wonder about the practicalities of the skyeels. I don't have a problem with 'flying fish' - after all birds are descended from dinosaurs, and it's not hard to imagine evolution turning today's flying fish (gliding fish to be more precise) into true fliers. However, from the drawings, I wonder about the power-to-weight ratio of the skyeels - would they be able to generate enough lift to take off even? Unless there's some trick they're using specific to the world it doesn't seem very practical. They'd also have to be warm-blooded to have enough endurance to fly for more than a few minutes a day. Some of the text seems to imply that they don't exactly fly like birds though - they 'undulate' rather than flit about. Fast enough to be predators though. Still, it definitely feels like I'm being too picky when we're using to flying dragons in fantasy
On a more general note, I think Brandon's prose has improved (for me at least). One problem I had with his prose initially (in earlier books) is that it tended to feel at times like something a Hollywood scriptwriter would produce. To me, this tended to "break the spell". From this point of view, "The Gathering Storm" was a big improvement and it feels like Brandon has recycled his efforts there into "Way of Kings", and quite possibly improved again.