Do you have a link? I would be very interested in reading it. This has always seemed to me to be a no brainer. This would have been especially true 7 years ago in the middle the release of the (albeit disappointing) new movies.
Here's one link:
http://news.cnet.com/8301-10784_3-9951772-7.html
Given the new animated feature and series "Clone Wars," the planned live-action TV series and Lucas' desire to re-release all 6 films in 3D, I don't think there will be any shortage of reasons to update the ride. Plus, Star Wars is timeless.