Do you mean the image stacking approach with several prints? Surely an interesting and quite perfect approach. But as he stated, he invested (ten)thousands of $ in this private project and though i think not possible for this preservation community.
I do respect his ethical choice to not make it public, but deep inside me I wish he would for the sake of preservation of modern culture.
It would be interesting what Disney thinks about this particularly project and thoughts of doing it also. From my point of view it wouldn’t be a hassle for them with their resources. They could launch it to cinemas and after that physical, nearly everyone of the fanbase and half or three-quarters of other people would watch it several times in the cinema and buy the blu-ray (1080p and 4K).