Adding Rose’s theme to such a moment is brilliant. I’ve been trying to think of ways to do a dialogue change along those lines too.
Another thought occurred to me. There’s so many ways this movie could have done right by Rose, one of the ones I always thought would have been easy for them to do was when they’re trying to fix the Falcon’s landing gear have Finn say “Where’s Rose when you need her.” No idea if there’s any Boyega lines to accomplish this.