Navani bonding the Sibling was a cool move, though I agree that it doesn't make too much sense given the Sibling's hatred of fabrials. I also feel like Rlain should have become a Windrunner or Willshaper, but I do like the idea of outcast characters becoming Enlighted Truthwatchers. Finally, I totally agree with all those threads about how there wasn't enough Dalinar and too much focus on Urithiru. Dalinar likely sat this one out because he starred in Oathbringer and will likely be really important in book 5, but I would have liked to see more of him. All that said, I really enjoyed this book and especially its artwork.
EDIT: my spellchecker corrected Navani as Natalie and I missed it.