That was an awesome packed finale, especially with the Starks kicking ass again. Good starting points for the next season. So wild speculation.
- I assume Cersei will want to move on the North, but she'll be surprised by the dragon invasion. The four women team-up easily defeats the Cersei army, with Tyrion giving the final push. The books will probably have Jaimie do it.
- Turmoil in the Riverlands sends Jaimie north again, but he is defeated by either Jon or Arya. He bows to them, leading eventually to the four Starks coming together. Bran reveals the truth, everyone realizes Jon is the true king.
- There is a breakdown between Olenna, Dorne and Dany. She burns at least Dorne and kills the Tarly dad and son which will lead to a position for Sam.
- Dany goes north to defeat Jon, but they quickly realize they need to work together. Theon gets a chance to shine, Tyrion has fun with Jon.
- The Night King attacks full strength, the army of Men have to combine forces. Jaimie dies, one of the dragons falls in battle (becoming Jon's ice dragon?) but the other important people live.
- Jon falls for Lyanna Mormont. Okay, probably not, Brann is more her age. Jon will be destined for Dany, we will forget they are family.
Is there a simple way to kill Littlefinger and retain control over the Veil?
She can marry Robin, the true heir.