Even today i don't really believe that Mists of Pandaria was a real thing. It looks so stupid and so much away from what the playerbase liked about the game that i still can't believe they really released something like that.
I do understand that it's not easy to manage something like Blizzard and the Dev-Team for something like World of Warcraft. But don't you think it's a relastic idea and task to give Classic new content without releasing BC again?