Don't care who they do next but they should at least fit it into the story correctly, unlike Lelianas song. In DA:O she tells the tale that she was sent to kill someone and steal the papers from his body, not plant them in Eamon's estate which is how it played out in the DLC
Here's a wild one - how about Sophia Dryden? We sort of saw the demise of the Wardens at Soldier's Peak in that time but there's MUCH more story than the DLC really told.