Oh I'm not saying they are diverse compared to Blizz (though the whole gaming/nerd culture there is choke full of what would be considered deviants, so it's the closest thing in an asian country you might find), I'm saying that Blizzard's writers may be many, but it doesn't really help if they all come with the same mindset of a californian hipster nerd.
Also you are right they try to improve the presentation and personally I would argue that they actually have the better means to convey story than FFXIV. FFXIV is incredibly limited as far as conveying dialogue is concerned. The "engine" in general is the textbook definition of limited. So I personally find it actually sad that FFXIV manages to convey simple emotions with the very limited animations better than what Blizzard does with their attempts that make all the character look like their jaws constant unhinge while talking and gesticulating like they have a stroke right now. The size thing is an issue as well, especially now that they have the option to phase out other players that get too close to the NPC. That should be adapted as the standard means to keep NPC interactions immersive. As for the writing though, while they may have finally started to acknowledge the player character ingame, the way they tell the story and what kind of stories they tell still leaves alot to be desired. They also lack alot when it comes to underline scenes with the right music. FFXIV is downright manipulative in that regard, but it works better than always playing EpIc wArDrUmS #213412.
Then again, the audience that plays WoW doesn't give a toss about the story even for the rare occasions when it's good. So it's pearls before the swine anyway.
Edit: Btw whenever I see your name I have to think about https://www.youtube.com/watch?v=ppjK4VIORdc&t :P