And in a complete saga edit, you have to view it kind of like a single book with 6 chapters. The original book is "Star Wars". And for some reason chapter 3 gives away everything you need to know. Chapter 4 for some reason ignores this information and sets us up for Chapter 5. Chapter 5 then dramatically reveals... everything we already knew from Chapter 3, making it mostly irrelevant. And Chapter 6 follows suit... along with rehashing the plot from Chapter 4 in a new and less interesting way.

The newly edited and expanded book of "Star Wars" should have each Chapter set up the next in a nice, fluid way that makes all of them equally important to the story.

As it stands, IMHO, ESB is the only film that can stand without at least slight alteration to allow a proper bridging and allow for the mesh. I think my favorite change in ANH:R is "There'll be no escape for the princess this time" which is one of the most obvious... so it can stand up to small changes for the sake of series continuity.