This is pretty much where I am too.
Ignoring for a moment the idea that she is the face of one of the most unnecessarily intense gut punches in this modern era of overt “going for the feels” storytelling, the biggest problem with the reliance on *any* single character to tell an MMO story over the course of years would wear out even the most beloved face. Now take that “belovedness” and apply it within the forced tribalism of someone on one side of the faction divide. Now split that faction she’s on in half on another axis of the story.
It’s too much, for too long, in a medium that must move slow by its very nature, and banks its quality on you caring “correctly” about the story.
If Shadowlands doesn’t shelve or end the Sylvanas story, we will have long since shot past tone deaf levels of overkill, IMO.