I'm sorry, but if you sit a kid down with the choice between EP IV and lets say Star Trek (the new one) the visuals are going draw the kid into the film much better than the amazing storyline.
Yeah, as adults we can sit back and think - That was pretty amazing for its time. But Star Wars grabs us in childhood for the most part. And in a generation that is growing up with The Clone Wars cartoons instead of the films, do you have any clue how outdated the OOT seems?
The OOT is beautifully acted and constructed. I'm simply saying that there was a certain visual WOW factor that we all got the first time we saw the films that isn't translating through the decades, when compared to modern films. And I think it would be amazing to simply update the "WOW" factor.
Thus why this is on topic. I think George Lucas has the right idea in this.