I have an idea for an upcoming edit of The Last Jedi. The final paragraph in the opening crawl mentions that Snoke has sent Kylo to obtain a wayfinder that will lead him to “a dark presence” that he must destroy as part of his training mentioned at the end of The Force Awakens.
We open with Kylo raiding Mustafar and obtaining the wayfinder before heading to Exegol, where he meets Darth Sidious and learns that Snoke was his creation (Kylo doesn’t mention that he killed Snoke, since he isn’t dead yet). We don’t get the shot of the Star Destroyers rising from the ground or the part where Sidious orders Kylo to kill Rey. After Sidious tells Kylo that Rey is not who he expects, we immediately cut to the opening Resistance evactuation scene on the ground.
We don’t get the first throne room scene with Kylo and Snoke, since it will be confusing if you have the scene with Kylo and Sidious play in the beginning while having Snoke berate Kylo for his failure to get Rey. Since we don’t get the first throne room scene with Snoke and Kylo, we remove the “Where’s Han?” scene (since it will be jarring if we cut from “Where’s Han?” to Rey explaining to Luke about the current situation) and it is now replaced with the deleted scene of Luke mourning Han before we cut to Leia in hyperspace.
I feel like this is the best option of everything that’s been proposed so far regarding seeding the Emperor. If we frontload TLJ with that knowledge, then it’s way less of a suprise, it keeps Kylo’s motivations ambiguous, and its shadow will keep TLJ feeling like a tighter part of the sequel trilogy rather than a lot of people’s ‘black sheep’.