1. Pan-scan is what I grew up with (despite the fact that I like the widescreen better), and there's a certain sense of nostalgia in that I don't quite get from the widescreen, even though it's so much better and is the version I'll watch most.
2. Pan-scan, while chopping off the sides, provides greater detail of what you do see than widescreen. For shots changed in a small way in the SE, it could be used as better reference than widescreen.
3. My intentions are to be able to view Star Wars in every way that has been possible to this date. I welcome your suggestions for any other available transfers I've missed. Even if I can't get a hold of them, it's good to know they exist.