Rogue One: A Star Wars Story was a strong entry in the Star Wars saga. It perfectly captured the feeling of playing Star Wars as a kid, and it all hung together well even with some major reshoots and restructuring. Many credit the film's veteran co-writer Tony Gilroy (Michael Clayton, the Bourne films) with guiding the film through the reshoots and post to what we have today.
Director Gareth Edwards has been slowly revealing more of the changes made to Rogue One during editing and post-production. While we still don't know just how much Gilroy did, we have some new details about changes to Rogue One below.
Keep in mind that there are MAJOR SPOILERS for Rogue One after the cut.