Did you bother to read the entirety of my post? Cata was awful little content, to maintain sub levels instead of a mount they offered us Diablo 3 for committing to paying for a year. The time it took to do the revamp took away from the expansion itself.
The stories are all relevant. Everything has it’s place in WoW.
But it won’t they aren’t going to throw expacs out the window. The best case scenario here is they lower the xp cap again, which in my opinion isn’t even needed. You can get to 120 easily right now with the xp nerf they already put in place. To level a character now is much easier than it was at launch.