I've only started the game so far (leaving Lothering), but I'm rather unimpressed for the moment.
The game has several flaws, and the story is very linear so far.
Story gripes:
I understand the story will get more open-ended. I still believe that the design of the opening scenes is poor. You really feel forced to follow one path. No choice, no semblance of a choice. I played the human noble origin, if that matters. Even the places (tower for instance) are linear.
The world seems full of history and stuff, but I can't help feel less immersion than in The Witcher which I just finished. Of course, I knew Geralt's books before playing, so the comparison may be unfair for DA:O. Still, getting into the world by reading walls of text doesn't suit me well. I think there must be a better way to get an introduction to the world.
I can't stand the bigots. Everyone and their brother talks about the Creator all the time, except for Morrigan. I already ended up dismissing all bigots from my group as they get on my nerves.
Of course all this is very subjective, and the game still feels interesting, with a nice challenge and the introduction does its work well.
Flaws:
The 'you can do this quest if you buy it' at the first camp. Ok, I'm not a cow to be milked. I bought the game, you could at least be halfway decent and not suspend disbelief by throwing me commercial stuff at the first opportunity.
Cameras. I don't like them. No way to see far. Moving to the sides of screen pans instead of a more intuitive (to me) rotation.
Text. This is a game that deaf persons will have trouble enjoying. Your party members chat together. If you play without sound, you can see text over their heads. Texts which tend to mingle with each other if you're lucky enough to actually see them. With the camera providing little view of where you're going in top-view, it's almost impossible to move around and see the chatter, let alone read it. Finding a way to put the text where it can actually be read would have been really nice.
Combat. Characters don't seem to have much in terms of zones of control. You can run to a character, start your attack and your opponent is gone before your move ended, despite staying there all along. The developpers could have implemented a charge option at the very least. Combat seems really unrealistic for me because of this. Movements which I can't believe can happen happen all the time in combat. Characters move around each other in a melee mess that I find unrealistic.
Movement. Ever hit 'H' by accident and met enemies alone on one end of the city? Running back to meet your party while telling them to come and help you proved to be a very fastidious experience. You really don't want to split up your group outside of tactical combat.
Overall, this is an interesting game, but contrary to The Witcher, I feel outside the world. The side quests so far stick out like they were added to the scene and don't blend in the world but seem artificial. I have reaally a hard time getting immersed into the game. I hope this will change, but it's not a game that will take a toll on my sleeping time, I'm afraid.