The Bittersweet Ending I'd like to see
Tormund tames the shrew that is Brienne of Tarth but he becomes a stay at home dad while she is the breadwinner as one of the Queens Guard.
Arya hooks up with Gendry. And they rule Storm's End together.
Sansa re-marries Tyrion because she's tired of Alpha males.
Jon and Dany hump once and she gets preggers but he dies in the war with the NK. She makes peace with the Lannisters, marries Jaime and unbeknownst to him, raises a child he didn't father...irony.
Dany exiles Cersei and she starts her own brothel.
Bran finds a nice big weirwood to sit down in forever.