I don't mind the crude graphics on Yavin. It looks the Rebel base look more temporary. Save the good hologram hardware for a permanent base. The thing I would like to see at least once is a hand-held hologram projector. Any Darth Editous-type work would be welcome.
So if we are changing the opening of ROTJ, and the old opening arrival of Jedi being moved to the end of Empire, I'd suggest using the alternate footage of Vader leaving the shuttle. There is a greater immediacy in this shot that was used in the Special Edition. Vader just storms down the ramp and starts harassing Jerjerrod. The old Jedi opening is iconic and dramatic, but it works best for an establishing shot and not as well for a shot at the end of the movie.