I'm not sure how recoverable it is at this point, but if you want Star Wars to act as a forever-story, don't treat it as one single story. Its okay if plot doesn't directly build with each release. Its okay if it doesn't connect to other parts of the cannon. Its okay if you have no shared characters. Hell, its even okay (if not ideal) if some media contradicts each other. The important part is making good stories, and if a new peice of media wouldn't work when attached to a larger plot, don't attach it to the larger plot. Simple as that.
Look at something like 40K, for example. While yes, there is a "main" plot, its only a small part. Honestly, fans often outright ignore the "main plot" Horus Hersey books, in favour of the more fun and compartmentalized books like the Eisenhorn Trilogy or the ork books because those are the books that most revel in the setting and themes of 40K and aren't burdened by dozens of other books that they have to tie in to.