While I think there may be a day we see an OT remake, I don't think it will happen for decades. The most successful remakes are those where the original movie had been out of the public consciousness for years, in many cases where it was to the point of obscurity. There is probably no other movie franchise that has penetrated public consciousness and pop culture like Star Wars, particularly the OT. You have about 40 years of fans who have seen the OT not just on home video, but it has been released multiple times on theaters, has prequels and sequels, an EU industry with hundreds of books and comics, and a whole land dedicated to Star Wars in Disneyland and Disneyworld. Disney will not remake the OT any time soon, due to all the $ billions they've invested on the movies, rides and merchandise based on Star Wars. While they tried to reinvent Star Wars with the ST and spin offs, they still use the nostalgia associated with the OT to promote Disney-Era Star Wars. Not to mention Solo was arguably Disney-LFL dipping the toe in to test the waters for a quasi remake, and it bombed. It was actually a decent movie, but Solo demonstrates to me that people would not accept a remake of the OT, at least right now. Maybe in at least 20 years, but that would require Star Wars being retired for a time, but Disney is just getting started promoting Star Wars.
I think a better way to reboot Star Wars is not to remake it, but set it in a different time period. They already have done that to an extent with the ST, but they still relied on the Big 3 as a tie to the OT. The one thing about the Star Wars is it has the ability to reboot built into it, and has done that many times already. The PT,Clone Wars, the Old Republic Era, the (now defunct) EU are examples of this. Now not to get involved with ZN's discussion, KOTOR is not necessarily a retelling of the OT, but it has a ton of call backs that make it feel like Star Wars. I think a new trilogy set far into the future (or past) that as George Lucas likes to say about the PT relative to the OT, "rhymes" with the OT would be a better way to go. You can have characters similar to Luke, Han and Leia, sort of like how Star Trek TNG did with TOS. If it were set in the future, you could even still have Chewie, the droids, and the Falcon. That is one thing KOTOR and KOTOR 2 sort of did...you had the Ebon Hawk, but KOTOR2 has a new crew but retained the droids, with old characters from KOTOR 1 appearing occasionally throughout the game. I think a new trilogy set say 50+ years after the ST would be the a good way to reboot Star Wars, so that it is not locked into any particular era, and they can pretty much take it into any direction. I hope that is what the GOT writers end up doing, actually.