Some ideas I have for editing this movie:
-Rewrite the opening crawl to remove overt mentions of Palpatine, making his return feel less abrupt.
-Cut Snoke clones in a lobster tank. It makes no sense.
-Cut lightspeed skipping. It breaks the rules of hyperspace travel, and it feels contrived.
-Trim Rey and Poe’s argument to remove mention of lightspeed skipping.
-If there is any deleted material that could pad out the first act, I’d really like to add it.
-Cut the little alien asking Rey’s name, for continuity with later changes.
-Cut “They fly now.” It’s really dumb.
-Cut the heroes encountering a big snake, and Rey healing it.
-Cut all uses of Force healing throughout the movie. It creates a huge plot hole if you can use the Force to resurrect people.
-Cut Rey seemingly killing Chewie. He turns out to be alive a few minutes later, so it feels pointless.
-Remove fakeout deaths throughout the movie. Actions must have consequences.
-Trim the scenes immediately afterward to remove mention of Chewie’s apparent death.
-Trim Zorii as much as possible, removing all romantic implications with Poe.
-Trim the Force bond lightsaber duel to remove Kylo saying that Rey’s parents weren’t actually drunkards.
-Remove Rey Palpatine completely, preserving TLJ’s plot twist.
-Cut Rey aligning the dagger with the Death Star wreckage. It feels contrived, especially when the dagger was created 20 years ago.
-Cut Rey healing Kylo on the Death Star, for reasons stated above.
-Cut the Final Order destroying Kijimi, along with the idea that every ship has a mini Death Star.
-Cut R2 restoring 3PO’s memory. Actions must have consequences.
-Cut Palpatine saying he never wanted Rey dead. It doesn’t mesh with the rest of the movie.
-Cut Zorii showing up in the final battle. Even without Kijimi being destroyed it feels contrived.
-Cut Ben climbing out of the pit and healing Rey, for reasons stated above.
-Trim the victory celebration to remove Maz giving Chewie a medal, Lando acting creepy to Jannah, and Poe’s interaction with Zorii.
-Cut Rey returning to Tatooine, ending the movie with the group hug. It’s a far better ending, and it doesn’t reuse the end music from TFA.
Those are just the ideas I have right now. If I have any more I’ll post them.