Ah I see what you mean. Just to finish up the MV discussion, I know he has some other prints as well (97 and perhaps some Eastman prints) and he may have used those but I’m not sure.
Right back to the 2004 idea: I think the main problem is that they all use the same digital master. The only difference is the level of compression. The bluray is already the closest we’re going to get. The advantage to using this technique for laserdiscs and film prints is that they are analogue copies and this averaging technique is trying to peel away the analogue generational anomalies.