Having seen the scans, I actually believe that given proper care, a restoration based purely on these scans could look better than the official BD on all counts - with a bit of sharpening (which there is a lot of on the BD) it actually rivals the sharpness and detail of the BD, and with some careful cleanup and noise management, it could look nearly as clean as the BD, while not looking unnaturally digital, like the BD does. This would take some serious restoration effort though, so the simplest way to get the original version something resembling a modern transfer/restoration of the kind we see with movies like Jaws or Spartacus, is still to color correct and despecialize the BD.