Alright, I’ve finally read it. Here’s a brief summary of my feelings, with the qualifier being that this was supposedly the first draft and they obviously would have changed things.

Pros:

Rey’s story. It follows in a clear line what was set up from TLJ. She’s from nowhere, but that doesn’t make her no one. She’s going to rebuild the Jedi, but she’s going to do it her way, and will fix their mistakes.
Finn’s story. Full circle for him, trying to give other stormtroopers the clarity of choice that he had. Saving them, not fighting them - the proper progression for his arc.
Rose’s role. She doesn’t have an arc or anything, but at least she has a presence that is befitting a main character.
A solid mission for the Resistance. Transmitting a message across the galaxy to rise up and then taking the capital both make sense as a trilogy-capping goal for the heroes.
At least one interesting scene with the Knights of Ren. It’s not much, but it’s something.
Some genuinely funny jokes.
A fun opening mission for the main group to play off each other.
Going to Mortis and really exploring the idea of balance and what that means is really smart and interesting.
Luke’s presence, appearing to both Rey and Kylo.
The moment where Rey reaches out into the Force, and connects with everyone and gains strength from their hope. A really beautiful moment that encapsulates what we’ve always known is true about from the Force and puts it in action in a way that should have been dramatized long ago.
Rey’s final scenes, where she has the choice to live or join the Force, and then we see her show up at the end to train the kids. Just a really fitting and meaningful end to the saga.

Neutral:

The conclusion, in a galactic sense. TFA and TLJ had a clear message about the ever presence of the dark side, and the need to always be prepared to fight. This ends with a simple ‘we beat them for real this time’ vibe. I say neutral only because the scope of the Resistance’s victory makes it feel much more final than what we saw in ROTJ.
The grey Jedi of it all. I think all the ideas are in the right place - Rey not being afraid of her emotions, her love and her attachments and all that - but I’m not sure they’re all executed in a way that serves this theme. In particular, the idea that she’s using the darkness within her, we only see a couple hints of this and it’s not really remarked upon. She kills a Knight of Ren with Force lightning and Rey’s not sure if that was good or bad in the moment. Ultimately, when she says she’s balancing the light and the dark, the only real assumption, with nothing else said, is that using the lightning is okay. The implications aren’t thought through and they lead to a bad spot. It makes sense that Rey isn’t following all the teachings of the Jedi, but what about using the Force for knowledge and defense and not attack? There’s no clarity here.

Cons:

Kylo Ren. His story in this is just painfully bad. I don’t necessarily have a problem with the idea that he hadn’t hit rock bottom yet in terms of badness in TFA and TLJ, but for that rock bottom here to be immediately before he changed his mind and then died is really just awful. It means his entire story here was just ‘become more powerful than Darth Vader,’ which is such a terrible abandonment of everything that made the character interesting.
Poe Dameron. Pretty much does nothing of note except be in love with Rey.
Rey and Poe. Silly and out of left field, considering the last two movies. The ideas they were trying to accomplish with it could have been better done elsewhere.
Rey and Kylo. Listen, I’m not a Reylo, per se, but it’s kind of hard not to see how this would have worked. TLJ really built up their relationship (romantic or not), but it’s totally shafted here. If it wasn’t bad enough that they have no Force bonds and their only scene together is them fighting, they also had to reveal that Kylo killed Rey’s parents (no reason) which retroactively changes their dynamic in TLJ completely (for the worse), because he knew this all along. Anyway, back to Reylo, if Trevorrow and Connelly wanted Rey to be in love with someone, flying in the face of the Jedi code, and they wanted to balance the light and the dark, the simplest and cleanest solution, based on what had been established in the last two films, was bringing Rey and Ben together.
Leia. Despite this being pre-Carrie’s death, Leia has essentially nothing to do, and also has completely given up on her son.
The plotting, in general, is sloppy. The number of planets featured is laughable. The opening mission barely has a goal, and ultimately has very little to do with the rest of the film. The FO has planet destroying Star Destroyers, but it’s literally just a throwaway scene and doesn’t factor into the story at all. The middle section of the film is relatively short (the script is front and back heavy). Characters split up nearly every other scene, leading to sections where we’re jumping back and forth between like 6 or 7 different storylines. And perhaps worst of all, the final showdown between Rey and Kylo has basically nothing to do with everything else going on.

So, mixed bag, though a lot of my problems feel like things that would have been corrected upon further drafts. So, until those drafts are leaked, I’ll say this is a very ambitious script, with big swings that I really appreciate, even in it’s overall messiness. Ultimately it’s very similar in that sense to the final product that we got, though I have to say on paper I find the ideas being played with here more interesting than those we ended up with in the final cut of JJ’s Episode IX.