For Disney, the idea of ‘everything matters’ outweighs restoring the OT to it’s original release cut. Disney wants everything to ‘fit’ both stylistically and in effects. I would wager they would be more interested in updating the SE SFX to fit in with Rogue One than from removing the SE changes. In fact, I bet they have a higher priority on making changes to the PT than working on a OUT. The SE is the canon they operate around now.
What’s your basis for this line of thinking?