Thats how the comic book universes started out. But then things changed. And the brands got bigger because of it, they attracted more fans. If Disney wants to get the most out of Star Wars they'll follow the Avenger/Marvel model. There is no reason why they can't made more movies AND a cartoon series (or several of them) each with different versions of the same characters. There is no reason that every book or comic they put out has to fit in the same continuity. Leaving that idea in the past makes their products more accessable, more open creatively, and allows them more oppertunities to create more products. AND its been proven that fans are fine that kind of set up.