I don’t know if anything will ever beat the experience of a fresh vanilla/classic launch. The first world of Azeroth was so vast and adventurous. No mounts until 40. Danger in contested areas. Players having to quest together. World PVP. WoW felt so alive. It actually made me sad to log in yesterday and see not 1 soul in the world on Grobbulus.
I’ll probably jump to retail now. I hope that somehow Blizzard can find a way to make the game adventurous again. The template is there, they just have to be brave enough to evolve the game into that direction again.