The music. I also am not a fan of using Burning Homestead for the third time, but we just couldn’t find any other music to fit the moment.
Duel of the fates? ( ͡° ͜ʖ ͡°)
It wouldn’t fit. It’s supposed to be a triumphant moment when the Force Ghosts rise up against Palpatine, and a cue originally intended for a battle scene wouldn’t really fit that.
Hal already added a minor repeat of DOTF during Rey and Kylo’s duel, so it isn’t really necessary to play it again.