Even though I normally play heavily-armored characters in most RPGs like this, I started a warrior, tried both tank and damage dealer styles and I was kinda 'meh' on both.
Then I tried Rogue, and holy crap, it was awesome!
I made a melee rogue, gave her the nicest leathers I could find, two weapon style, and I kept active control of her almost 99% fulltime, only pausing the game to tell the healer to cast Group Heal (something the AI refuses to do) and/or revive people when necessary. Oh, and sometimes I'd have to tell the tank when to go after a different mob than the one he's fighting, because sometimes his choice in targets isn't exactly agreeing with my thoughts. Oh, and Poultices are your friends; use them! Multiple people getting low? Pause and tell everyone to med up.
Otherwise, I let most of the characters do whatever they want to do.
RE:Turin: Not sure what your playstyle was, or who exactly you used in the group, but if you use Alistair, the healer magess, yourself (I used a melee rogue) and either the golem or the huge warrior guy, you can pretty much let them do whatever they want and you will kill crap. Well, that is, at normal diff. If you jacked it up to Hard or what-not, then maybe not. But then I bet Hard-mode, they expect you to micromanage everything.
Edited, Sep 13th 2011 7:38pm by Lyrailis