Most of my comments were going to be about the Knights of Ren, so I’ve posted those on the relevant thread. I’m also glad that you’re planning to add the force ghosts and the Falcon taking off ending (with Finn, Poe and Chewie on the Falcon?). I love what you’ve done here, and these are my suggestions:

Take one of Rey’s early “Be with me” lines, and add it at the end when she’s burying the sabers. Either put it when her face is off-screen, or make it echo so it’s in her mind.
Tweak the crawl. If this is indeed a Rey Nobody cut, the movie needs a new name. I’ve made some suggested changes in bold. If you think they change things for the worse, I won’t be offended:

Episode IX

A BETTER NAME FOR THIS MOVIE

All who dared speak the name of Luke Skywalker are now silent, slaughtered by his former students, the merciless KNIGHTS OF REN. Yet whispers of the Jedi Master still echo across the galaxy.

Supreme Leader Kylo Ren rages in torment! Haunted by the memory of his father, he means to destroy Han Solo’s home world of CORELLIA to further kill the past, erasing all reminders of his paternal heritage.

(Last paragraph is solid)

As for potential titles, I checked a bunch of old speculation articles, and I like “The Last Hope”, “The Final Order”, or “Ashes of the Empire”.