I know many people are talking about how Palpatine came back to life and jedi force healing and all of these somewhat new powers that were introduced, but these were all talked about. If I'm being honest I walked out of the theater confused and a little frustrated. I agreed with the critics until I started watching debriefs of the movies and easter eggs. Everything that happened in the movie was talked about in former movies, tv shows, books and games. In episode 3 Palpatine talks about Darth Plagaus and how there are unnatural things in the universe, (Coming back from the dead). If you really wanna know more I'd recommend Screen Rant on youtube because he does a good job debriefing these movies.