I also played it today (PC), and I have mixed thoughts.
The narrative, and opening was subpar compared to Origins. Not really bad, I just felt that Origins had a much stronger opening.
They removed the tactical camera from the PC version, alright, I'll miss it. At least I can pan my view and zoom out a little bit. Hopefully they'll update the DA:O mod tools eventually, then modders will just fix this.
The UI was kind of ugly. Albeit simple, I much preferred Origins' UI. Not really a big deal though, at least we have a quick bar. (PC)
The combat is much more fun than Origins. Bare in mind, I liked Origins combat, I just thought it was annoying that you basically had to trick and lure the AI, and chug tons of health potions to win fights in higher difficulties. Honestly I wish the combat would be more like Baldur's Gate. It's also extremely over the top and gory. I honestly didn't expect to see men swinging around two-handed swords like they were plastic, or arrows causing a whole man to explode.
While it's kind of cool, I liked Origins' realistic yet fantasy setting. They seemed to have went to pure fantasy, which is fine I guess, but it does ruin some immersion for me. It's kind of a novelty, honestly I wish it was slowed a bit more (the animations). But not as slow as Origins, was a bit too slow.
I played through fully with a Rogue archer, and it was very fun. The archer felt more like a nuker (aside from Arrow of slaying) than just a support/CC class(Pinning shot is pretty amazing now). Also played a bit as a dual-weapon Rogue in the beginning, was also fun. The abilities like backstab were really fun, and visually appealing to use.
The Mage was also kick ass. I didn't play through the whole demo with the mage like the Rogue, but during the time I did it was extremely fun. Especially the new attack animations for them. Makes them feel a lot more useful as damage dealers.
The warrior was the most boring of the three classes. With the abilities I was given (shield bash/heavy strike). They just weren't as fun or satisfying to use. That being said, I loved playing a 2hander in Origins. I'm guessing the Warrior class gets more cool abilities later on. To be fair I didn't get too far with the warrior in the demo.
The voice acting was worse than Origins and Mass Effect. It wasn't really bad, but it wasn't amazing like usual. Having a silent protagonist didn't mind me at all before, though Hawke's voice is actually pretty good. His/her Sister didn't preform that well. At least from what I've heard in the demo.
They seemed to have stylized the art more, while it doesn't really look bad, it doesn't look better, or worse than Origins. (Maxed out on PC, DirectX11).
I don't like that the game doesn't continue with the Warden and his/her companions. I know due to how Origins was set up (I haven't played Awakening or any DLC yet) it probably wouldn't have happened anyway, but still. I grew attached to those characters, and my Warden. I don't really like how they're just saying "Fuck it' and casting them all aside. I guess I'll get used to DA2's companions.
Kind of unrelated but whatever.
This brings me to my next point. DA2 doesnt really feel like a sequel, it feels more like reboot as someone else said. Then again I don't have much evidence to support this until I actually play the full game. wtb cameos.
Overall, it seemed more like a combat demo than anything. Hopefully later as the game progresses the story, and dialogue gets better than the demo. I liked it, and I'll probably pick it up sometimes this year, not a buy on launch title for me though.
Yes I was quite nitpicky, but these are my honest opinions. Some things are easily shrugged off, but that doesn't make them hidden. I can still have a fun time even with some minor flaws, so please don't bitch to me that I'm being a nitpicking fuck.
Also, long post get. And boobs, lots of big boobs. Seriously, my sister is hot.