I'm eager to see Cullen's interaction and opinion on our mage companions. Will he like them, dislike them or grow to like them or be wary all the game?
We have ambitious Pro-Circle mage who has hidden agenda, reformer mage from Tevinter that uses almost forbidden magics and apostate mage who likes spirits and visiting fade and has been avoiding templars for ages.
I think none of them is "ideal mage" in Cullen's mind which probaply mage who likes being in Circle, knows dangers of magic and is cautious on their use of magic ^^; Maybe something close to Bethany? Well only my opinion though.
Viv I think he'll dislike her attitude, but agree with her view on mages and the circle
Dorian I think he'll dislike, but grow to like and even respect as time goes on. At least I hope he does 
Solas I'm not really sure about. I don't think he'll like his view on the fade, but at the same time respect all he knows about the fade.
I'm probably completely wrong
. I am also really looking forward to what he thinks about our mage companions, and all the other companions.