Well you've got me to thinking a bit more about this, so I've done some searching based on my suspension.
https://wegotthiscovered.com/movies/star-wars-rise-skywalker-composer-hints-returning-characters/
If you click the link to Anakin's theme, then fast forward to about the 2:30 mark you'll pick up parts of the Imperial March (a hint of things to come, as it the article states).
He is the original Skywalker, and with these references dating back to Ep. 1, combined with J J's tendencies to regurgitate movies, it only makes sense he will fall back to where it all began.
I haven't been keeping up with the rumor mill on this finale at all, but now that I've seen these rumors suggesting force ghosts battles, perhaps Palpatine and Anakin duke it out in this last hurrah! Would be a somewhat fitting in given Palpatine stuck him in that cumbersome, heavy and painful armor and never upgraded him
Hard to say, you don't know what bastardizing Disney has do to the Star Wars universe, as the above may no longer be universally accepted as it once was.