I went to watch Rogue One having seen the first two prequels at the cinema. I had zero expecation of it being any good, and only went because I had a spare afternoon. I also knew nothing about it other than it was a direct prequel to Star Wars.
What I saw blew me away. Krennic was a totally believable Empire commander. Jyn and Cassian were perfectly believable as somewhat reluctant Rebels. K-2SO introduced genuine humour - something utterly absent from the prequels. The space battles were spectacular, as were tjose on Scarif.
I was delightfully shocked to see Tarkin; I thought at first it was clever use of old footage. I waz surprised to see Leia, although the CGI made her look at bit odd.
And Vader. At last we know why everyone in the galaxy fears Vader. Not because he chokes people ovcasionslly, but because he is 6 foot 7 of death and destruction. Genuinelly terrifying, and it's almost like a horror movie as the Rebels desperately try to close the airlock doors on him.
Rogue One is by far the most enjoyable movie of them all.