Kurt is getting a whole book to show his new approach to the faith, and X-men #7 showed he was struggling with the Crucible and the whole situation.
As for the poly relationships, I really struggle to see why is that so completely out of character for any of them. And "they haven't done before" isn't an excuse, because even hinting at something like this 15, 10, or perhaps even 5 years ago would get a writer fired.