Yeah, I too think it would be cool to see a version that "preserves the twist" and what not, I just don't see why many think it's the definitive way to edit the PT.
As for flashbacks, yeah I think that is a good idea. I actually suggested something like that in the ESB/ROTJ thread. Though I realize there are no flashbacks in any of the SW films, I think a flashback could actually fit in quite nicely, and still feel Star Warsy. And yeah, Ben's chat with Luke would be the best place to put it.