We know the ending is bitter sweet, either Jon or Dany will die probably after siring a new Targaryen dynasty, My money is on Dany dying in childbirth. Jon kind of wants to die so making him live especially after the second love of his life dies,he would get the kids with a family name he has always wanted but, be forced to rule over a kingdom he doesn't want feels right out of Grrms playbook. Grrms wife said she would divorce him if Arya dies. Sansa is being set up to take down LF. Tyrian who knows really. Either him or Jamie will probably bite it. I can see a murder triangle happening of Tyrion>Cersei>Jamie.