my big question about these movies is simple... who the hell can possibly be the bad guy in a continuing story about the Skywalkers. And if the story ISN'T about the Skywalkers, is this even a Star Wars movie?
the only way I can see any of this making any kind of sense thematically, is if Luke somehow falls to the dark-side and it's about his son trying to get him back. But even that sounds ridiculous and even more ridiculously repetitive.
but if we're going by what Lucas and others close to Lucas have said, which was the idea was always for 9 stories to be part of one big story, how else can this go following pretty much the most important family in the galaxy?