Lately I’ve been experimenting with putting Holst’s “Mars - The Bringer of War” in TROS’ finale; it’s not technically a > Star Wars piece, but it had a lot of influence on A New Hope’s soundtrack, so using it here might make it feel like it’s come full circle.
Here it is as Rey is standing up to Palpatine:
https://www.youtube.com/watch?v=3jdgf5JFm1A&feature=youtu.be

Ngl, reminds me more of Murray Gold than John Williams, but still not totally off-base. Still, of all the places you could possibly remove the Force theme from, this feels like the wrong one. It works well enough here, though.