The fact that Jaime can now warn the North about Cersei's betrayal is one of the things that puzzles me about why she drove him away. I mean sure, her basic strategy is "alienate every human being on earth and I'll win". But I can't see any gain for her on this unless there's some plan with Tyrion that I don't get (pair Jaime with Dany?). My spidey sense is tingling, but I can't put a finger on it.

I never had any problem with Tyrion's plan for the wight, but plenty of people did. I completely agree that there's a tendency to confuse what we the viewers know with what the characters know.