I'm afraid the way Bioware went about the DLC for Dragon Age has me annoyed and little will change that. I'm currently wondering how much pain I have to go through to actually get the DLC, given reports of EA/Bioware Social Beta not playing together nicely...
It all worked perfectly for me, if that means anything. Remember that all but one DLC is included with the game so far... only the Warden's Keep is extra, and even then only if you do not buy the Digital Deluxe version.
The way the game is set up, like Baldur's Gate or Fallout, it is pretty seamless to add in DLC content and the game was basically made for it. If it is a way to get more revenue to support this kind of hardcore niche product on such a massive budget and scale, well... worth every penny, in my opinion. The only thing I might have a problem with is the in-game sales pitch, but I haven't seen it myself and cannot comment until I do really.