I was referring to game mechanics changes and innovation like destructible environments. I think pandaria was playing it safe in their minds because they tried to appeal to a mass China demographic, which didn't work as well as they expected I guess. I think if Cataclysm had had 13-14+ million players at its end, they would never have risked pandaria, because no matter what the forums heroes on the official forums claim, there simply was never that much demand for it, since its entire concept was only the existence of chen stormstout. Many more people in the existing player base were expecting ED or BL or Azshara, but I think they wanted to replenish their numbers.