After playing all these games and DLCs I only have two regrets:
1) Not conscripting Loghain. The one and only time I did a run through of Origins Alistair killed him, and only watching YT videos have I learned how awesome Loghain is. As it was in DAI I have the choice of Hawke v Stroud, and well, Stroud is a dead man every time. I feel if it was Hawke v Loghain I would have a much harder choice and my gaming experience would be richer for it.
Since the Keep is a thing though, guess who will be alive my next DAI run through 
2) Isn't even DA. Why didn't I save you, Captain Kirrahe? Why?!