To be brief:
Music is meh.
Zones are meh.
Story is bad.
Gearing is terrible. Its sad when Benthic as a system is not only better but far more enjoyable than the more demanding gearing simply because of the agency in acquiring it.
Classes are in their worst state they’ve ever been.
Gear pieces look meh. Lack of tier.
Azerite single handedly made me stop playing 3 specs religiously to just playing one spec while feeling demoralized to play others.
Worst designed dungeons we’ve ever had. Definitely eSport focused instead of plebeian normal player focused.
PvP is a joke and no one is laughing.
Gear Resets have never felt more demoralizing.
IE’s are awful and neigh mandatory to max your neck.
Allied Races are underwhelming.
I feel like the Void has been played out and the original reason why people thought it was cool (the mystery, the hidden sinister nature, the forbidden knowledge) has all evaporated in favor of “LOOK AT THE TENTACLES!!! TENTACLES ARE SCARY! LOOK HOW PURPLE EVERYTHING IS!!! PURPLE IS THE MOST SCARY COLOR!!! ARE YOU CREEPED OUT YET???”
Sylvanas sucks.
Thrall looks like a HD textured Roblox avatar.
Dragons still castrated.
Warfronts are tedious. Darkshore is insultingly bad.
Mission Board exists but in a state so boring that its almost funny how little it rewards. Except for when it has a big, important mission, then its just as tedious as the rest of the mission boards. Also, why is so much of the Faction War story told through mission boards? No one ever mentions the fact that, according to the Mission Boards, the Alliance has taken the Crossroads. Would that have been a cool scenario? Hell yeah. Would it have been a cool, world changing thing? Double Hell Yeah. Because its a mission board does it matter and will be brought up in the lore? Absolutely not.
The Night Warrior was obscenely dumb.
Tyrande still has a speech impediment that came from nowhere.
Forsaken Night Elves. Seriously, they’d join the people who killed their people because they are mad at Tyrande? Dude, that would be like if Sylvanas willingly joined the Scourge because Kael’thas wound up being a jerk.
Void Elves: Exists
Gameplay is basically Legion’s gameplay, but worse in every way. Even the World Quests are the same, yet feel somehow worse. Partially because you don’t have that tactile feedback of manually opening your emissary quest box. Having it auto-open is sooooo much more fun than opening a treasure chest /s
Lack of mage tower counterpart.
I could go on, but I feel like I’ve already gone on long enough.
EDIT: Because this has been bothering me…
Deathwing erupted from Deepholm, right? Literally blew apart most of the world. Why is Azerite just now popping up? Why didn’t Azerite show up when a giant death dragon literally erupted from the world it self so hard that continents at the other side of the ocean split apart? Where was the Azerite all Cataclysm??? This story is just Mists of Pandaria 2: Cataclysmic Boogaloo.