Main problem with WoW's writing is that there is - and never has been - an unimpeachable dictator/writer in charge of WoW who takes the credit and the blame for everything, and definitively owns the product and everything that happens in it. WoW does not have a Sakaguuchi, a Kojima, a Yoko Taro, a Kondo, a Yoshida, a Miyazaki, etc, who is in control and is implementing his vision. Metzen was never that guy, not when he was expressing frustration at writing the Forsaken for WC3 and that the WoW dev team didn't "get" what he was setting up. Or when the devs shoved in Belves into the Horde for the Asian market, Or when Metzen didn't want playable Death Knights and was overruled. Or when the Mongrel Horde almost happened and WoD only happened because someone thought that powermetal orcs were cooler rather than for any overarching planned artistic story. WoW is designed by a literal committee of people tugging and pulling, each on their own page with their own vision, from the higher ups down to the quest designers. And it is a revolving door committee too. The ideas that earlier people set up are never followed up on in the way that was originally envisioned as the guy either gets promoted or leaves the company and new people fill his shoes.
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For the videogame industry "just hire good writers" is not quite that simple.
I recommend to people that they read Shiwasu Tooru and Ken Shimomura (director of the Japan Game Scenario Writers Association)'s series of indepth articles about writers and their history in the videogames industry.
https://archive.fo/5e1nU
https://archive.fo/IDNXu
https://archive.fo/it4Ae
https://archive.fo/oJ2Eo
https://archive.fo/tYbMO
https://archive.fo/jeQBw
https://archive.fo/JUP1z
The TL;DR is that the nature of the medium and thus the development of the product makes it tremendously difficult to acquire good writers (who are qualified to write for videogames) and for their work to survive all of the developmental shifts or unforeseen obstacles.
Outside of a small handful of cases, it usually does not make business sense to hire a full time writer. The story has to be written at the beginning of development so that the other departments know what levels need to be modelled, what the systems are going to be, etc. For most games, the writing can be done in a short amount of time. So if you only hire a writer to write fulltime, then he finishes his work in the first few months of development and then does nothing. But contracting good writers does not work either, because there are regular changes during development which require more writing to be done, and it is logistically too much of a hassle to keep having to go back to the writer you contracted and work out how you are going to pay him this time, etc.
Lastly, videogame companies have taken losses due to hiring a "professional writer" like a novelist or movie script writer, only for that person to produce something that is completely illsuited for a videogame medium and development. The writer really needs to not only play videogames, but also understand the tools and limitations and resources of the company producing the game.
Therefore, the solution is to appoint a dev team member to do the writing. They already know the gaming medium, know what the dev team and the engine and the tools are capable of, etc. And when they finish writing, they can go work on other things, and there is no hassle when you need to tell them that something has changed, go write new stuff.
It is only very recently with the advent of the live service visual novel, aka gacha games like Granblue Fantasy, Fate/Grand Order, Final Fantasy 14, etc, that is has become practicable to hire full time writers who only write and do nothing else. When you are pushing out a novel's length on a schedule of every 2 to 6 weeks, you now need people who only write fulltime. And often, multiple writers due to the sheer amount of text and output. Fortunately for Japanese games, the domestic box purchase visual novel and literature industries have died due to declining birthrates, leading to there being a lot of now unemployed actually skilled writers who have been vetted by writing competitions and novel awards and are now willing to try their hand at videogame writing. Hence why Japanese gachas and FF14 have become acclaimed for their writing.
This is not the case for other countries. China is now producing big budget gacha games that push out a novel's worth of story every 6 weeks, but the novel industry is still alive so there is not a lot of talent floating around willing to become glued to a videogame indefinitely. So you get writers like Shaoji who are amateurs, have not been vetted by award competitions and the editors of publishers, etc. And the West does not produce any games that pump out anywhere near a comparable amount of text in a regular basis. WoW, GW2, and TES only release new major content patches once every 5 months, and it contains a 15 minute to 1 hour long questline rather than something that might take an entire weekend if not longer.
Normies do not care about the quality of writing, though. As in the plot construction, motivations, pacing, etc. They only care if a movie has a sufficient amount of feel good moments. So slop like The Force Awakens or Zootopia 2 become lauded despite having writing that would get an F on a grade. Hollywood movies have sucked for almost thirty years (because the scriptwriters are paid minimum wage in the high cost of living Los Angeles area, and then what they produce is thrown into the woodchipper of several rewrites before it hit the big screen, having been diluted of everything that was unique about it) and it wasn't enough to cause the movie industry to change. Movie scripts written by AI won't change anything because we already at rock bottom.
Good writers haven't been writing movie scripts for a long time, and if they are still writing commercially then it's by selfpublishing their books on Amazon. But now the Amazon indiepub industry has been collapsing for a few years now, so maybe we'll see some now unemployed writers try their hand at games.