Which was dumb, as people were using something as basic as GOOD BAD instead of an expansion that has fewer resources dedicated to it. Legion and BFA are both big. This is the first expansion AFAIK that was planned to be small and it points to all the terrible dev problems in Blizz over the past few years: there’s no way they planned for the end of the Arthas story to be in a WoD-tier expansion.
Also the mists thing is funny because Mists was far less work than Cata. It just was good.