Hopefully they return to the awesome tactical gameplay of DA:O, or try something completely new. The worst case scenario for me is if they go back to the "streamlined" clusterfuck that was DA2. It's like they tried to combine the tactics of DA:O with the action of ME2 and fucked it up terribly, and then, to make matters worse, made it so I couldn't unattach the camera to do anything tactical.
The environments got repetitive, but I can forgive that, because it was all supposed to be the same place.
The beginning sequence was awful, and I felt like the final act had some continuity issues, but I actually didn't mind the bulk of the game. The characters were easily Bioware's worst, though, and it's a shame, because I liked Anders in Awakening, and while Merill and Isabela weren't developed characters by any means in DA:O, they managed to make both of them really irritating.