I'd agree that the original trilogy would be called the sequel. You gotta remember that George Lucas is essentially returning to the movie making block after telling everyone the ending. How interesting would most of ESB be if everyone knew Skywalker spawned from the loin of Vader? If you cut through into the future kids will be entertained as ever with Jar Jar, awed with Anakin's pod racing skills, taken down the path to the dark side seeing the juxtaposition between Anakin good and Anakin bad, whatever to send him over the edge in the third, then onward towards the (possibly memorized) original movies, completion with redemption. IMHO Movie timeline and real life timeline dictates OT as the original sequel, and eps 1-3 as the prequel follow-up. Now if Douglas Adams was around to share the book about was-were-is-were etc (haven't gotten that spot referenced) we could all move on to realizing that the latter portion of the book was left blank to save on ink costs. Thank you and good day.

It's all about the towel.