A lot of noise has been made about Warner Bros marketing the new re-release of 2001: A SPACE ODYSSEY as "unrestored" and honestly Disney could take a few notes:
The Blu-ray of CINDERELLA (right) has been so scrubbed of grain that they've actually destroyed the linework in some scenes
Disney's whole process of "restoration" on high-profile releases is actually completely destructive of the original image, i.e. the original cel animation and background art as shot on film 80-30 years ago
Instead of just cleaning dirt/fixing scratches/adjusting colour timing, they rotoscope every frame of character animation and isolate it from the original scene
They then recomposite the isolated animation over a new background, cleaned up and stitched together from the original scene
The end result is a picture free of any of the natural grain pattern and gate weave you'd expect from something shot on film, completely disguising the film's age and medium
The problem is that the Blu-ray of SLEEPING BEAUTY, for example, isn't a presentation of the film from 1959 - it's a new, digital creation assembled in 2003, divorced from the cultural context of the original film https://twitter.com/MikeThornWrites/status/988464499660275713