I liked this movie. I saw it at early screenings. This film has also brought back the scene of the Death Star which was very nice to include in the final film. Seeing all the Star Wars episodes, this by far has to be the best one with the Emperor in it. The Emperor in this film was viewed as a demonic character which made him even more badass. Yes, I can see why people were dissatisfied with the Emperor's return, but we have to remember, who started and was responsible for destroying the Jedi Order, creating a brand new Empire, and restoring the Sith.... The Emperor. The fact that he was brought in the final movie made it better because it all started with him leading Anakin to the dark side. However, I do wish there was at least a better fight scene between the Emperor versus Rey, Ben, or maybe all the force Ghosts appear to help. I didn't like the way he died by his own lightning reflection. It made him look weak towards the end of the film. If J.J Abrams wanted the Emperor to look 'demonic', then he should've died differently, not by his own lightning reflections.
To finish it off, I am glad they brought J.J Abrams back to direct the final film. I was disappointed with The Last Jedi film, directed by Rian Johnson. This movie was better than episode 8.