“The good thing about standards are there are so many to choose from!”
IMO GOUT (NTSC GOUT to be precise) meets the “good enough” standard, and I’m for sticking with it forever. Adding a frame that was never actually seen in theatres would break sync for all projects (not that it would matter for subtitles, but I’m thinking of others), for a pretty esoteric benefit.
There’s a better argument to be made for matching theatrical prints, since they have fewer frames than the GOUT, but it does not seem that they do so in a consistent manner, so there’s no standard that would apply to all prints. And losing those frames would also break sync for all projects for a pretty esoteric benefit.
Theatrical prints are missing frames because of projectionists cutting them off from time to time and wear and tear on the print. 4k77 is GOUT synced because the one missing frame is at the end of reel 5 for which we didn’t have a 35mm source. We would have had to use a BluRay frame to add it, so it was just left out.
Jedi GOUT is missing two frames from the middle of reel 3. We have “perfect” 35mm 4K scans for those two non GOUT frames. Those will be included in 4k83. It would be dumb IMHO to exclude 35mm theatrical frames to maintain a flawed video standard like the GOUT.