Well, actually, I never saw this as a problem in the SW BD or even the DVD for the most part don't really suffer from blown out highlights - if anything, the highlights are usually too muted - it is logical that you'll get blown out highlights in a flash frame and it's the way it should be - there may be more highlight detail on the O-Neg but there definitely wouldn't be on a print.

Now ESB is a different story unfortunately - there they somehow managed to severely blow out the highlight and crush the blacks at the same time in some scenes (you just have to look at the lightsaber duel to see that this is definitely not the case with the whole transfer) but in SW, I think it's not really an issue.