The word here is "timeless" people should be making note of whenever addressing WOW's graphical quality. And as timeless as WOW will always be, I'd kill to see Vanilla WOW remade with all the style and personality of the Heroes of the Storm's graphics or Fable's or inevitably a Pixar movie. But as good as it can always get and be improved and still be timeless and simple, the original vanilla WOW used clever origami like approaches to their models to make it forever timeless.
Just imagine 2004 WOW created in paper. If you saw that you would not say it looked terrible. It would be fucking charming, or you have no heart and eat kittens. I am open to changing my mind, but I don't want to.
- - - Updated - - -
Things like adding dynamic simulated wind and ever more dynamic stylized weather and animal behavior and sophisticated stylized shaders and lighting FX will make WOW's beauty forever immortal and relevant for it's timeless approach.
Imagine that sentence sung by a beautiful woman.