Just got home from seeing it. Went in with zero expectations and left pleasantly surprised. Its well-directed, the acting is satisfactory (there were a few lackluster performances), but the main thing I enjoyed is the *mostly* unique storyline. I felt like The Force Awakens had waaaay too many similarities to the rest of the saga. Some people liked it for the nostalgia, I personally thought it was the easy route. Rogue One was a breath of fresh air.
My one issue with this film is the CGI Tarkin. It seemed completely out of place and really took me out of the story right as I was settling in
It's the first and last star wars movie I will watch, I disliked it alot, and being set before the first star wars movie(I'm pretty sure) that didn't have much impact on my thoughts. I feel asleep during the first hour of the movie, watched the rest hoping it would end.
That being said it's not for everyone and I'm sure if I was into the concept it would of been appealing.