Jaws dropped. Maybe having the option of adding 1-2% of luminance noise after decompression to disguise the plastic feel would make it look even better. It would look a bit different every time you load the image, though.
Must not necessarily look different: use a PRNG with a fixed seed, possibly as part of the image itself. Since there's nothing cryptorelevant here, the PRNG can be a simple one and its exact parameters specified as part of the standard.
I would love to be able to use this today.