The transfer you did looks really good. Of course, the video quality isn't as good as the 2004 DVDs, but you work with what you got, right? (Maybe we should petition Lucas to give us access to the original or SE prints...)
I do have a couple complaints though.
1. The "Letter to Mr. Lucas" and the "Ralph McQuarrie Gallery" are videos. Well, them being videos is fine, but at least, please put in chapter points for each page of the letter and each picture in the gallery. That way, if we can read faster than the video, we won't have to wait.
2. There is no menu button functionality programmed into any of the videos, including the movie. Hitting the "Top Menu" button works, but that's hard coded into the DVD player. Say, in Adobe Encore, you can specify which menu you want to send the user once they hit the Menu button. You can customize this based on which video the user is currently viewing.
So, my final verdict is: Transfer is great, the way the disc is set up (menus & chapter points in the videos other than the movie) could use a little work.
Thanks again for posting it!