While I'm hoping the expansion will be great, and I think there's a chance it could be, the story writing of the the Icebrood Saga has not filled me with confidence. If that's anything to go by, the expansion may well be a rushed story with little cohesion, a story line that does not make a lot of sense and somehow filled will Dragon Response Missions because that's what the dev's seem to think we all like.
Really hope I'm wrong though, there's so much potential with new storylines/content in Cantha.