|Nice try, DW, but no cigar.|
One of the problems that I have sensed in the past several months is that many players aren't as invested in the story Cataclysm has brought us. In one regard, we could probably look and say that players may be getting jaded, and there is probably some truth in that. But on the other hand, there are some principles of story-telling that didn't line up well in this tale of the Black Dragon that destroys the world.
The company line is that "This Cataclysm is like... the most dangerous thing that has ever happened in the world! Everything's all broken! Fire! Fire!" But, the structure of the video game doesn't support such histrionics. The day that Patch 4.0 hit, we all logged on and all the worst destruction had already occurred and the world was still there. Our immediate reactions were not "Oh noes! Must... fix... world...!" For most of us, it was just curious amusement and the knowledge that the world was going to persist, because if it didn't... what were we going to play in?
And, for the lore student, it's easy to see the Cataclysm isn't the most horrible thing that ever happened to the world. The Sundering, 10,000 years before, that split the Pangea-like super-continent into the major landmasses we have now (as well as the full-fledged demon invasion immediately preceding it) clearly altered the face of the world more than Deathwing did.
Another of the key storytelling problems this expansion is just simply that The Lich King was a tough act to follow.