I think the main reason Cataclysm and MOP are getting so much hate is because the lore theme of the expansions are brand new and doesn't reflect any of the Warcraft series.
If or when blizzard makes an expansion based on Queen Azhara or Burning legion (again) etc, it will get ppl a lot more intrigued, including me. Either way i will be getting MOP :)
Malscyllis' comments