This expansion has taken a lot of lessons learned from previous failures and successes to form this expansion. It is the most casual friendly expansion we've ever had, even more than Dragonflight. I wasn't 100% behind Delves at first -- not as solo content, but once I started doing them in groups AND on alts? I realize they were at most the most unique thing about this expansion as gameplay goes. Let's also not ignore how better the gearing and progression system is? While the story isn't anything to brag about, there's also not much to criticize on. It definitely has improved with Metzen's return and Danuser's departure. While I do not believe this expansion will dethrone Legion as the best expansion, at least for me, this expansion can definitely become a top 3 contender if they continue on this path and continue to listen to feedback.
Personally? For the story I want some slight adult themes to return: Language, more blood and gore, and morally questionable quests.