Some other info I read about Rougue One - this report at least saying the reshoots are due to the "tone" of the movie and executives wanting it to have more lighthearted moments and not be a "war movie"
"According to
The Hollywood Reporter,
Rogue One: A Star Wars Story is set to end ten minutes before the events of
A New Hope. It was recently revealed that the film will have several re-shoots in mid-June.
The reason for this is that Disney executives saw the film and thought it was tonally different from a “classic”
Star Wars movie. The cut they saw was described as having the tone of a war movie. The re-shoots are designed to add a “sense of fun” to the film.
A source said: “
This is the closest thing to a prequel ever. This takes place just before A New Hope and leads up to the 10 minutes before that classic film begins. You have to match the tone! Anything less than extraordinary won’t do.“ "