All of the voice actors in DAI did a really good job, especially Cassandra, Sera, Leliana (props to Corrine who did a very good job transitioning from happy, cheerful to dark, brooding Leliana between scenes), Cullen, Josephine and many others.
I think it's safe to say Bioware games have the best voice acting in them. And you can clearly see that the devs are in very good contact with the voice actors, they don't have to constantly change an actor for a character, unlike Triss in The Witcher for example. She has a new voice in each game, it's still good acting, but it ruins the consistency of the character.
Also, Jo Wyatt as Ciri in The Witcher is perfect, considering Ciri is one of my favorite characters and my canon is sassy fem!Hawke so...
I don't get why people say fem!Hawke's voice is terrible, I think she did a fantastic job as sarcastic Hawke, while male Hawke fit more as the agressive type. Similar to m!Shep - Paragon, fem!Shep - Renegade in Mass Effect.