All the 0 reviews for Dragon Age 2 are ridiculous. Whether in response to the BioWare user-review or because of the changes from Dragon Age: Origins - it's just one big, unwarranted bitch-fest. Everyone is so tough on the internet, bunch of babies.
I'm about 35 hours in and it's no Origins. I'd call it disappointing, not terribly engaging, but still oddly addictive and, as you say, Wombat, it "scratches an itch." I'd give it a 7.5 out of 10 so far. Really wish I hadn't stopped playing the original Dead Space to play DA2, but no going back now.
The voice acting in DA2 is top-notch, which is no surprise it being a BioWare game. Combat is dumbed down too much from DA:O. The quests aren't as fun. And they really screwed up the Sneak ability for Rogues. But I guess it's something until the final Mass Effect 2 DLC lands and Skyrim steals my life away.