This was a Dalinar book so I was expecting strong focus on Dalinar and less on Kaladin, but...idk I think there definitely could have been more development of Kal. Felt Shallan got more "air-time" than Kaladin. Maybe they could have cut out some of the minor character view points and put more Kal in. Hopefully, the next book has more Kaladin (yes, I know it's someone else's flashback book but still...). I did like what we did see of him though. I notice some people (not on here I don't think) feel that there was a regression of his character, but I don't really feel that at all. Kal has always been plagued by his "must save everyone" mentality and it definitely held him back from saying the next Ideal. Having him just suddenly "get over" that problem would have felt very wrong. I look forward to seeing him develop more and eventually confront this problem in the next book.
Funnily enough, I really disliked Kal when I first read WoK. And I didn't like him for some of WoR. But, well the guy eventually won me over and is now my favorite character. Guess that's why I wish there was more Kal in Oathbringer. What is interesting is that now when I re-read WoK I enjoy it much more and don't hate Kal anymore.