Wow. That legit got me hyped. If Episode IX really is a saga finale and not just a sequel trilogy finale, Abrams HAS to use Dual of the Fates somewhere. It's just so damn good and effective and people would lose their minds.
The sequel trilogy really needs to up its music game in general. Rey's Theme is the standout so far, but it's obviously a quieter piece. We need to end with a bang, and if they're not up for giving these movies more distinct/epic fight scores, at least resurrect Dual of the Fates for a crucial/relevant sequence in the final movie.