Two years ago, (HIMYM spoilers ahead, of course) a Reddit user named Arguss apparently correctly predicted the twist ending of How I Met Your Mother—that is, that the mother dies and Ted and Robin end up together instead after Robin divorces Barney. Now, he's turned his psychic sights onto Game of Thrones. Warning... possible spoilers ahead?!?!
This is literally just a wild guess, but:
The Faith Militant get into a civil war in the capital with the Lannisters, weakening them. Littlefinger and his friends the Tyrells use this distraction as an opportunity to assert power. Tyrion counsels Daenaerys about ruling and, along with Varys, prepare for an invasion of Westeros. Meanwhile, Jon Snow gets resurrected and leads the Wildlings and the remains of the Night's Watch in a pitched battle against the Whitewalkers, but without reinforcements they'll be overrun. Dorne attacks at some point and further confuses things.
You have the Whitewalkers coming in from the North, Westeros in yet another civil war, weakened, and then Daenaerys comes along to save the day, using her dragons to kill the Whitewalkers, save the kingdom, and restore the Targaryen line. The name of the series is completed, with the Dragonfire being used to fight back the 'ice' of the Whitewalkers. A Song of Ice and Fire.
Of course, that leaves out theories about Jon Snow's parentage, who Daenerys is going to get to ride her dragons, what Arya and Sansa and Bran and Cersei and Jaime and Margaery have to do with all of this, and whether Daenerys and zombie Jon Snow are gonna bone (they gotta bone, right?).
Still, considering how complicated Game of Thrones is, that's not a bad resolution.