The DeEd’s are limited by the detail of their primary sources. The current Blu-rays, though 1080p, really don’t have any detail aside from sharpening artifacts above 720p. A better-mastered Blu-ray set (perhaps based on the Reliance 4K scans) could possibly form the basis of 1080p versions, or even 4K if the films actually have enough detail to justify that. My guess is that these better-quality versions of the SE’s (if they ever materialize) are likely to be quickly mooted by film scan preservations, so there’ll be little need to despecialize anything anymore after that. I do wonder if 2.5 might be the end of the line… unless we can gang up on Harmy and convince him to do another coloring pass on Star Wars 😉