I see you’re putting your writing skills into use, Nev!
TLJ was already too long a film so moving the battle of crait into the opening might be just the right idea. It also allows the film to breathe and enjoy a fleshed out opening with dramatic action and character building. I wonder if some of the Cultists from Exogol could be added to the background in Snoke’s thrown room, Snoke’s allegiance to the Sith Eternal cult would need to be emphasised. Subtle things like playing around with the colour of his robes (purple, black, red) would really give him that “sith” aesthetic. Could even overlay subtle hints of Palpatine’s voice as he utters certain words like “a new Vader…”.
I’m really intrigued by how you’re approaching Kylo Ren in this. Is it meant to be implyed that he has become possessed by the spirit of Palpatine after striking down Snoke? It’s very reminiscent of the very early TROS leaks by MSW. I really like it.