Male Dragonborn, Siding with Imperials - Marry Elisef in the end and become a Jarl. Then we can talk about becoming a High King, too. You defeated the World Eater. Is there anybody who can do that except you?
Female Dragonborn, Siding with Stormcloaks - Marry Ulfric. Choose to be a ruler next to him.
So, what do you think?