It’s a good question. Wrath is when I left, Wrath was the peak but also heralded the decline.
I would seriously hope that Blizzards senior management is paying attention to all of this and all of the communities demands. I think at this point they need a sequel to recapture their past glories. I can’t see a handful of different iterations of WoW all being presented simultaneous because it would end up in the changes/nochanges argument for each one and then the calls for Classic +, TBC +, Wrath +, ect
None of these possible product fill the most important need, bringing in NEW players, those who have never played WoW ever, those who have never played MMORPGS ever, just like WoW did back then.