Let's see, there's the ancient Jedi temple with Rey and Luke, Kylo and Hux getting it from Snoke and probably turning towards Emperorship somehow, probably some kind of backstory reveal for Finn, Poe's (apparent) death, the regrouping from the loss of the Hosnian system and the center of government, with Finn getting recaptured and reconditioned and a 'the light side is fucked' cliffhanger to lead into IX.

"Star Wars: The Shit Hits the Fan."