I did enjoy the movie, but after thinking about it for a while I find that as a standalone movie it isn't that great. Direction wise & visually it was amazing, as would be expected. Storywise I don't think it was that interesting or unique. Jyn is pretty dull and has one really good emotional scene, but that's it for me. Cassian was just really un-charismatic. The blind guy and his friend had the best dynamic between them and felt underused, the same with the pilot. As for the parts I really enjoyed, they live on the legacy of the original trilogy (AT-ATs, space battles, Vader, Death Star).
I was sort of bored with the first two acts of the movie, so IMO the movie should've started at Yavin IV and just went on from there with more character development and less fan appeal.
I can't agree with people who say that Tarkin (got distracted by CGI), Vader, AT-AT's, and a big space battle needed to be in this movie. Director Krennic should've been the only antagonist and I felt he got overshadowed in the scenes with Tarkin & Vader, for no real reason except for fan-appeal. If he and Jyn's father had more scenes instead of Tarkin & Vader, then their characters would've been much stronger.
I'm not disappointed, and still enjoyed the movie, but feel like it could've been much better and added much more to the Star Wars universe hadn't the producers taken the safe route and kept a lot of old elements from what everyone associates with "Star Wars".