The cave scene with Luke preparing his lightsaber while 3PO & R2 look on would have been an excellent bookend to the Star Wars scene where they're all introducing themselves to each other the day the droids were purchased from the Jawas.
A cerebral passage, a reflection if you will, of all they'd been through together. A sort of once more unto the breech moment as closure to that initial meeting all those years ago.
Too bad it wasn't part of the film. Lucas had long since lost his way telling the story of Star Wars anyway, so I guess it doesn't really matter. That storyboard shot looks fantastic. What a lost moment.
