This whole sequel trilogy has been Lucasfilm discovering nobody knows what Star Wars is. If you can go back and watch Star Wars, free from decades of hype and expansions, it's not THAT far from the New Hollywood 70s auteur films of that era. It was something deeply personal and idiosyncratic, pulled from George Lucas interests in Kurosawa, Flash Gordon, Dune, John Ford, David Lean. Nobody had no idea what Star Wars is, so they were free to create from whole cloth. I think that applies to Empire as well, in that now they had the confidence to expand what a Star Wars movie could be, and even include a Kurosawa style puppet mentor who taught us what The Force was.
But that time is over. Star Wars isn't personal anymore; it's product. "
market-researched,
audience-tested, vetted, modified, revetted and remodified until they're ready for consumption." As Scorsese so aptly described our current blockbuster cinema age. When it came time to make the Sequel trilogy, it wasn't because there was some big story coming from a personal place to make it. THAT much is clear just watching the movies. They said we needed new Star Wars movies to back up this financial investment, and so they simply made them. All the old signifiers came back: rebels vs Empire, x wings and tie fighters, hot shot pilots and cute droids, the force and lightsaber duels. The things the fans want. Star Wars got popular because it introduced us to things we never seen before. Now it exists to serve us things we already know.