OP, these kinds of posts are getting pretty old... Thats why all the negative comments. But it doesn't mean you are wrong. Lets just hope beth comes out with some good dlc and in ES VI focus on story more. My dream is to see bioware type dialogue and consequences in an open world beth RPG. I can dream...
Bethesda usually does a good job with their add-ons. On a whole, I find them to be much more interesting and unique than their vanilla counterparts. When Bethesda's writing get a chance to mix things up, they can do some cool things.
Tribunal/Bloodmoon > Morrowind
Shivering Isles/KotN > Oblivion
Point Lookout/The Pitt > Fallout 3
Sure, there have been some duds. Fallout 3's Operation:Anchorage, Broken Steel, and Mothership Zeta are best left forgotten, and all of the other Oblivion DLC's were mere diversions.