A few random comments on things that have come up in the last sevenish pages:

I love the night-time to morning idea for Ahch-To and Nev’s latest mockup is really getting close to being flawless. The shot of the TIE bonfire from behind Rey is so much better with the intense contrast.
I do like TestingOutTheTest’s interpretation of Rey’s arc, but I don’t think her giving the lightsaber to Leia (and then getting it back a few minutes later) actually does anything for it. It feels totally half-baked, like an idea JJ and Terrio had but then forgot to expand on and just left in anyway. I also prefer the implication that Rey has been struggling with her training and ‘making excuses’ about it for a while, whereas leaving it in sort of makes it seem like this is the first time. I’m also not the biggest fan of the importance the films place on that saber to begin with; Luke only used it for a few years, long before he became a legendary Jedi Master, so it’s much more iconic in the real world than it ever was in-universe - it feels like another symptom of JJ’s love for the OT sort of meta-infecting the universe itself (see also “this is the ship that made the Kessel run in 14 parsecs!”), but that’s a whole different discussion.
I don’t think the Bestoon Legacy is Rey’s parents ship. The TFA flashback (and its reuse in TROS) do seem to imply that she watched them leave in it, but the name ‘Bestoon Legacy’ (Ochi of Bestoon) and D-O being onboard and all suggest to me it was Ochi’s ship. Plus, he must’ve gotten to Jakku somehow. I think in ret(con)rospect, we have to assume the Jakku part of the TFA flashback is a mixture of vision and flashback, and that little Rey never actually, literally watched that ship fly off while Unkar took her away. I’d assume that at some unspecified point after her parents sold Rey, Ochi arrives in the Bestoon Legacy, locates Rey’s parents, takes them on board for interrogation, flies off, and then kills them. Maybe Rey saw the ship fly off and sensed her parents were on it, hence that being part of her TFA vision/flashback or whatever. But there’s no way they sold her to Unkar seconds before Ochi flies away like the flashback would imply if interpreted literally, because that’s just silly. Rey also appears to ‘remember’ her parents being killed by Ochi, which isn’t possible, unless that bit of flashback/vision is just for the audience’s benefit. EDIT: Revisiting TROS; Rey does literally say “the day my parents left, they were on that ship”, doesn’t she? Implying they really did sell her right before getting taken by Ochi. Good God, what a retcon.
I still believe editing TROS such that Rey’s parents were always bad people is feasible. Rey can still be mad that Palpatine killed them, even if they were terrible people. She does have reasons to hate him other than that too, such as him being Space-Hitler, his corrupting influence on Ben (to whatever extent she’s aware of that), and even surface-level stuff like Luke telling her she has to face him. I think the toughest question to answer with this change would be what was mentioned previously: why wouldn’t Rey’s parents give her up to save themselves? I think there’s a few ways you could come at that. Perhaps Rey’s Dad and his wife hated Palpatine so much they were willing to withhold that information just to spite him, even if it meant their own deaths, as someone (Jar Jar Bricks?) suggested earlier in the thread. It’s still essentially a sacrifice to save Rey, but it leaves them morally grey rather than having them be retconned into the loving parents that Rey wishes they were. Or maybe they did try to sell Rey out, but didn’t know exactly where she’d wound up - I’m sure there’s plenty of Jakku outside Niima Outpost - so Ochi killed them anyway. It does get a little contrived, I admit, but it’s not like this movie’s plot is rock solid as is, and I personally think it’s worth it to avoid undermining the TLJ reveal.
Darth Muffy brought up deepfakes but they’d not actually help here at all. The faces of young Luke and Leia aren’t CGI like in the Mandalorian or Rogue One, they’re actually footage taken directly from ESB and ROTJ and composited in, so they’re 100% legit Mark Hamill and Carrie Fisher. They only look odd because of the extensive relighting and masking and recolouring done to get them to fit into the scene (and because they took Leia footage from the scene in ROTJ where she’s really sad lol).
I’m sure everyone will be pleased to know Kylo canonically flew a TIE Scout to Exegol, which is a variant with a hyperdrive. You can always trust the expanded material to paper over goofs. I still like the idea that he steals Vader’s TIE.
I would certainly like to see the “Leia sensed the death of her son at the end of her Jedi path” line altered if anyone can pull it off well, because it adds this weirdly pessimistic vibe to Ben’s sacrifice. Rey taking Leia’s saber to ‘finish her journey’ or whatever is supposed to be a hopeful thing, right, but it just sort of feels like Rey accidentally makes Leia’s vision a reality and seals Ben’s fate. This weirdness is compounded even further in the theatrical film by having Leia only become one with the Force after Ben dies, and then everyone being happy ghosts without him (and also the scene earlier in the film which can be read as Leia distracting Ben so Rey can stab him), as this super uncomfortable sense that Ben’s death is inevitable and everyone (except Rey) seems kind of relieved about it rather than sad. I don’t think it’s intentional at all but it’s really strange.