I didn't play much of inquisition, mainly played origins, though I do know one thing.
Cass is love.
Cass is life.
And Alister is adorably innocent.
He's a big puppy for sure. My absolute favorite character however is Varric. The smart-mouthed, story-telling dwarf will always win hands down.
I loved the dialogue in DA2 and replayed it three times just for that. The party banter had me in stitches the whole time.