What do you mean close the Sage / Quinn storyline?i have no idea which storyline it will close, the first season closed the storyline with Maya and Josy, the second one? it could be Sage/Quinn, that would explain why in the seventh season we were given the chance to reopen the story with Sage... we'll see.
What happens between them is Quinn scheming to eventually take control of the HOTs. I don't see it ending in one episode. I rather see that which would really explode at the beginning of the season to resolve itself over the following episodes.
What I would like to see ended is the storyline Maya and her father. At the end of episode 8, the problem is resolved. Like that, during season 3 we can really explore the three-way relationship, and see if it can work or not.