I only have one suggestion for this, but I think it improves the film greatly:
Start the film with Luke on Dagobah
It just makes so much more sense, and focuses the whole film around the central conflict, that of Luke vs. Vader. The scenes would progress as follow:
OPENING CRAWL
-“Luke has returned to Dagobah to complete his Jedi Training. Meanwhile, Lando has traveled to Tattooine to prepare to rescue Han Solo from the clutches of the vile gangster Jabba the Hutt.”
VADER CONFRONTS JERJEROD
LUKE AND YODA
LUKE AND BEN
THE EMPEROR ARRIVES AT THE DEATH STAR II
THEN A DELETED SCENE
-We would then use the “Luke’s lightsaber” deleted scene to transition to Tatooine. The scene starts with Vader walking down the hallway of the Death Star (here, presumably right after talking to the Emperor). He then walks to his meditation chamber, and communicates with Luke…
-…who is in a cave on Tatooine. This establishes for the audience that Luke has traveled from Dagobah to Tatooine.
THEN R2 AND C3PO GO TO JABBA’S PALACE
And the rest of the film proceeds normally.