Haven't read the thread yet. Just watched Rebel Moon - Part One and thought I'd post my reaction first. Though I'm predicting it's at odds as there seems to be a bit of a anti-Zack Snyder's films tendency round here and I quite liked it.
Sure, there are a few rough edges but at the very least it's competent and got some good things about it. I really liked the WWII aesthetic they had going on - the uniforms, the vaguely Soviet look of the main villain, the short back and sides haircuts on them all and the rivet-style spaceships. I'm glad this wasn't a Star Wars project. Well, mixed - I think it might have elevated Star Wars as everything other than Andor and Rogue One that they've released since TFA has been crap. But it also would have reigned in some of stylistic choices of Rebel Moon.
I liked the lead a lot. If there's going to be the trope of the "lone woman beats up a group of men", Zack Snyder is one of the better directors to do it because for a start he likes women that are actually athletic and tough looking. It's not Kristen Stewart in Charlies Angels flipping body builders into the air. For a start, the lead in this movie may not be Gina Carlo muscle size but she's certainly lean, certainly got a very athletic frame. Anime waifu she is not. She actually looks like someone who has been through hard times. Got a pretty solid chin as well.

Basically, she can be charming and likeable without being some MCU wise-cracking look-I'm-acting type. And I like that. There's nobody in this movie that doesn't look like they can be their role. And the villain just as much so - he looks great in the role. And his general manner and delivery are excellent. Took me a while to place him when I was watching but he's the villain guy from Deadpool. He's very good in this.
Zack Snyder can go overboard with the stylised violence and normally I don't like it but in here he's mostly going for more realism. In the final one on one fight with the villain Kora gets the edge over him when she manages to temporarily rope him a railing. And there isn't the near universal trope of someone being beaten half-to-death and then suddenly finding the power of emotion and getting back up and fighting from fresh and suddenly winning. Something I've grown to really dislike in recent years.
And one thing I do like with Zack Snyder is that he still cares about film being art. He's not all about shaky cam or TV style. You get actual composition in the shots that I like. Such as the spider woman (who turned out to be Jena Malone, a favourite actress of mine) or Bloodaxe's final leap:
Or near the end with Kora:
Anyway, perfect? Probably not. Above average and a cast I really liked a lot? Yes. Rare that I find a cast these days that I'm genuinely impressed by and enjoy. This had that which gains it a lot of points in my book. Looking forward to part two.
EDIT: Okay, now to read this thread and see how much hate there is...