Also, I like the idea of, if you’re going to use tracked/older music, finding alternate variations on that music as performed by other orchestras. It kind of neutralizes the sort of “pulled out of it” aspect that tracked music can lend to an edit. “Oh, that’s just music from X movie” becomes “hey…wow, wait a minute.”

Also, I believe someone’s posted a version of the Death Star duel that has the concert version of Duel of the Fates mixed in and it works REALLY well. I can’t remember where I saw it here though. Maybe there are alternate performances of it that could work just as well, or maybe better due to it not being so immediately recognizable to fans.