I finished it some time ago and replayed some parts of the game to see the different endings. I'm ambivalent about the game. I don't really like the combat system, though it got more entertaining near the end of the game. The final battles could have been more difficult for my taste - everyone made so much fuss about the Archdemon and how it will destroy the world and how you need a huge army, and then I won almost all of the final fights with a lousy group of four...
The quest design of almost all of the quests sucked - worst of all were the quests you can do for the various organisations. In most cases, the quest descriptions were so incredibly boring that I couldn't even bother to read them (even WoW had more interesting descriptions!), and many times, I just went somewhere, saw that arrow sign over somebody's head and got a reward without knowing what it was for. I would have preferred quests for which you have to really explore the world and more often than not have to think a bit before you find a solution. Also, it would have been nice to solve more personal quests, have NPCs approach you and ask you to do something that has a high personal value for them instead of killing random people for an anonymous organisation.
I loathe the journal and the codex. It's a good idea to put some background information about a new setting into the game, but the codex was so ridiculously structured it gave me a headache every time I had to look something up. I read all the books you could find in
BG2, but just couldn't bring myself to read the DA codex. I can't really put my finger on it, but I think it was mainly because of the way the files were added to the codex - they weren't added in the order you found them, they weren't clearly labeled, etc. and that just made me not want to read them.
I played as a city elf and I liked the origin and how it keeps popping up again and again.
The main story is ok at best. The beginning in Ostagar was good, but then I got quite bored until I got to the Landsmeet. The Landsmeet, the night at Redcliffe and the final with the Archdemon reconciled me with the game, because of the effect it had on me and my companions. Actually, I think the companions are the only thing that prevent the game from being a complete failure. If you romance Alistair, you have to make some dramatic choices at the Landsmeet and the first few times I tried, I got some sad, moving endings.
Then, the banters. There were so many of them and so many funny ones, and I also liked how one was built on the other - people remembered things the others had said before and you could really imagine that they were developing friendships. I think they should have added more interjections, though. There were many, many situations that just screamed for a comment by certain companions, but they never reacted. I would have liked to introduce Alistair to my father or have some of the goody-two-shoes complain about my burglaries, for example, and there were some situations where the pious Leliana should have interfered. I also think there were too few lovetalks or at least they should have been spaced out more. I think I had seen all of the available LTs before I had even finished 13% of the game.