I imagine that the film will begin 30 years after Return of the Jedi; as the actors are thirty years older and Luke's son, Ben Skywalker, would be about the age that he was in the original trilogy. Queen Leia will have fallen to the dark side and risen to the seat of Supreme Chancellor in the New Republic. Darth Sidious would be secretly resurrected via a cloned body and would take a new apprentice in Jacen Solo (below), whom I would picture wearing a suit that is reminescent of the visage of Vader, though with some accents of royal blue. In the absence of Luke Skywalker, who will have distanced his new Jedi order from the politics and power of the Republic; Jacen Solo would lead the fight for the Republic in the Swarm War (or some facsimile of it). Boba Fett should escape the Sarlacc and go on to kill Leia. By falling into the Sarlacc pit, Fett was likely spared the death he might have incurred had he escaped the battle on Tatooine and returned to the side of Darth Vader in Return of the Jedi. It is because of Luke that Fett survives to return and totally change galactic history. With the death of Leia (in the first film); Jacen Solo (Darth Caedus) would rise to power in the state of emergency and the Sith would once again rule the galaxy with an iron fist. Darth Caedus' identity, as the son of Leia and Han would not be revealed until the second film. It would be something that some of the characters know, but the audience; like Ben Skywalker, is in the dark. The plot needs to revolve around a group of college age kids; Ben Skywalker and Jaina Solo, upgrading and rolling around the galaxy in either the Outrider or the Millenium Falcon. It is key that the characters pilot a singular ship, with a name, through all three films; and that the movies heavily involve the characters flying around in that ship getting into trouble.