Where the HECK is World of Motion?!?!?! That’s the answer. Like ripping out Disneyland’s Pirates.
Really, the destruction of WoM, Horizons, and Imagination (and Kitchen Kabaret) can’t be separated. All sprang from the same completely misguided sense of corporate panic and foolishness and all were replaced by massively inferior attractions. Nothing afterwards can come close to that miscalculation, since it effectively destroyed EPCOT and subsequent mistakes have just been rearranging a hollow, meaningless shell.