“Because it’s been done before” in my mind is a terrible reason not to do something. I’m not expecting anything specific in terms of what happens in IX (other than generally continuing and concluding the themes and character arcs of the trilogy), except I have to say if Ben ends the trilogy being just straight up evil, I will be pretty miffed. In my mind that’d be anti-thetical to the spirit of Star Wars.
I completely agree with you. It would be a very down type of ending. It would be perfect if Episode IX’s final shot just before the credits is Rey and Ben looking off towards the sky on whatever planet they are on. Whether it be Tatooine, Jakku, Ahch-To, Yavin IV, Naboo, or a new planet.