You all are not pulling any punches in this thread in regards to your feelings on the matter.
All of the thread's jokes, insults, and circlejerks aside, if they want this to be successful, they just have to fix the few issues with the movie and not rewrite everything.
Fix the few plotholes, fix the slow space chase partly by writing that the rebel general revealed her plan to the crew so there was no unnecessary mutiny, or leave the unnecessary mutiny in but fix the side quest with Finn and Rose to not involve leaving to a completely far away casino planet while their comrades are fighting for their lives being shot into oblivion. Add about 10 to 15 minutes of a Snoke flashback or at least add him saying who he really is and where he is from to Rey so we can at least know that story. Also on a smaller note fix the two scenes where people were not affected at all by the vacuum of space(not talking about Superman Leia).
That's it. Leaving Luke alive or dead after that force projection is something I don't really care about. The more you change, the more Rian fans will make fun of your project for being too fan-fictioney. Keep it simple and to the point.
Someone actually did make director's cut versions of the prequels that take out a ton of unnecessary scenes, add in dvd-cut scenes that added to the plot in some way, and get more to the point so things are more cohesive and paced better. They were on YouTube for a long while, called the no-cheese edits. They managed to cut 40+ minutes from each movie and after watching them I thought they were pretty good cuts.
Not pulling punches is the only thing you can do. From their tweets alone you see they haven't got a clue how movie making works. I mean, one of their arguments is 'a team of writers is always better then just one who thinks every idea he has is the best'. Disregarding how having a lot of writing credits isn't really an indication of the quality of a movie (more often and not it's an indicaton of how awful it probably is), they really think a screenwriter pops out a screenplay and the studio just gives it a go, without notes/meetings and multiple drafts?
And sorry, but you're ideas wouldn't turn TLJ in a better movie. Not by along shot.
Holdo not giving her plan to Poe? Yeah, from their first moment together it is pretty clear she doesn't trust him at all. And he is demoted and has no business knowing of the plan, which depends on secrecy above all. Yeah, it all goes horribly wrong because of this, but people make mistakes, and it's those mistakes that ensure conflict, which is the thing you need in your movies. It's way more intesting having your hero's get themselves in a pickle, than having goodie goodshoes being thwarted by just badguys. Having Poe realise he fucked up and growing into the leader he has to be, in stead of someone who thinks everything is solved by blowing stuff up, is actually a character arc you know.
The 'side quest' is again integral to the main character going on this 'side quest'. That it is on a faraway planet doesn't mean shit. He is there BECAUSE his friends are dying and because this is the best plan they have at that moment. It's also a plotline that again serves the character and the story of that character, not a plot for the sake of being plot.
Having a Snoke flashback or having him say 'oh, for the record, I'm Darth Plagueis's clone's brother-in-law' is a terrible idea. It wouldn't serve anything. Screenwriter's actually try their best to avoid having too much exposition. The least of this shit you have, the better, because it only holds the story up. Exposition is the thing that is constantly being trimmed down in new drafts, and often lots of it ends up on the editing room floor too. So what would it serve? An itch some fans have given themselves (because Snoke is not set up as a mystery in TFA. He's set up as the man pulling the strings in the FO, and none of the Hero's wonder 'who is Snoke?', they all just acknowledge his supreme commander role). Also, the big cameo/reveal in Solo pretty much proves how awful these kind of unessecairy reveals can be.
Don't worry, there will definitely be a comic or a novel at some point digging into Snoke's backstory. But for the story of the movie? It doesn't mean shit.
The Last Jedi isn't without it flaws. It has some pacing issues and the Leia space-thing doesn't really work in how it was filmed (I do believe it wouldn't be such a devisive moment if Carrie was still alive though, it kinda grades with me because I thought they had found a beautiful way of writing her out when I first saw it). But overall it's an incredible movie, that has the kind of clear authorial vision so many contemporary blockbusters lack. It's actually memorable, because not one of the main characters get out this movie the same way they get in. It's a character-driven blockbuster, trying to find the most interesting story to tell, in an age where having fan serving set pieces are all the rage. I'll take this over any of the Marvel-movies for instance, even though I sit my ass down at the first showing of every MCU, like I do with every Star Wars.
