A good retcon would be if our player characters woke up at the end of Burning Crusade from a bad dream.
Muh demon corruption isn’t nuanced nor is it original. FFS it’s from Tolkein too.
In fact it actually smells like Warhammer 40k in its current styling.
Go and read the Warcraft 2 Tides of Darkness manual, written from the perspective of Gul’dan when he first touched the consciousness of Medivh…that was actual, quality writing, in a game manual of all things.
To whit:
It was during my fevered flight that the Presence finally made contact with me. It radiated untold power, but it lacked the emotionless control displayed by Kil’jaeden. My senses seemed to take control over the dread that had engulfed me, and my mind began to cipher and reason. I knew that if I could divine the desires of this force, no matter how powerful, I could use it to further my own ends. The presence identified itself as [Medivh], a sorcerer from some far and distant [world]. We communicated not in words, but in a guarded joining of minds. His mind seemed boundless, but his thoughts moved so swiftly that it was difficult to learn anything from him. All the while, I knew that he was probing me - learning more and more about the [Orcs] and our magic. I could never learn as much from him as he would from me, and I soon broke contact with him.
Nothing that has come since has been interesting or nuanced. It is black and white, good gais versus bad gais.