I think it works really well. I’m thinking of actually making a vision for the scene, with quick blurry flashes of events that will happen and I’d definitely add the Emperor’s laugh in there, but this is very subtle and nice.
I’d do a HD remake of this edit, with shots from The Force Awakens and The Last Jedi, and yeah I’d also add Sidious cackling, before we cut straight to the lightsaber already turned on. (We can imply that Sidious or Snoke, not Luke, turned on the saber or something)