People who say to do zero tweaks, just slap the original to digital, are discounting that the process of transfering film to digital simply does NOT result in a viewing experience that is the same as seeing the original film projection. A really proper "restoration" to digital also requires a certain amount of additional work to make the playback of the digital look as close to competitive as possible with how good the original projection looked. There are always some tweaks.
Of course, the SEs go WAY beyond teaks. But the types of tweaks described in the first post are pretty common and as far as I'm concerned would be totally acceptable in terms of making a digital version of the original trilogy that is faithful to the original viewing experience... if they included faithful reproductions of the original sound mixes that aren't over-compressed.