One thing that's a bit odd is that, unless my ears are deceiving me, some of the original voices are still there but in different roles. For example, Alix Wilton Regan (the English-accented Inquisitor from DA:I) does the game's narration now, e.g. the voice who reads out stuff like inscriptions on gravestones, but I could swear she was one of the options for the PC voices in the original D:OS. Then again, I haven't fired it up to check and my memory isn't the most reliable...