Ending the prequels with an apparent “victory” does seem like an interesting route. The only flaw I can think of is that it would make the sequels seem even more derivative of the OT, given that both trilogies would begin with the previous heroes’ accomplishments being undone in the first paragraph of the crawl. 😉
Who cares what it does to the sequels?
You’re right, of course. I just couldn’t resist making that comparison.