A little additional history here: when the ACES Project Committee prepared to take the ACES subset of OpenEXR to SMPTE for standardization (ST 2065-4), the group seriously considered including the various compression schemes. To do so meant it needed to come up with a compression “plug-in architecture” for the standards document, as well as taking on standardization of the compression schemes themselves. That was more than could practically have been done at the time, so the Committee decided to start with the basics: uncompressed ACES2065 image data (ST 2065-1).
The intention was (and is) to add compression support in the standards suite. Any volunteers willing to take this on?