Uncompressed (with lossless HuffyUV) captures make a difference, even if the source is only from Hi8 which has roughly the same resolution as s-vhs or laserdisc.
http://www.originaltrilogy.com/forum/messageview.cfm?catid=12&threadid=7640&STARTPAGE=3

And burning to dvd uncompressed (or at least far less compressed with a higher quality codec) would be possible with a blu-ray disc Maintaining the most quality is something that's very important to me. Sure, Hi8 video obviously won't use as much space as HD video but it still loses quality with lossy compression.

If the extra's on the Blade Runner dvd will be in 480p (wouldn't it be 720p since that's what regular dvd has anyways), then it might be interesting to compare the blu-ray and dvd versions to see if the less compressed blu-ray looks any clearer. Was Empire of Dreams on the '04 bonus disc 480p or 720p?