I doubt this is an issue since everyone knows that no one can replace Carrie Fisher as Leia.

Fisher has always seemed to have a mature, nuanced take on what the role of Leia meant in her life. Both a love that she got her life transformed, coupled with the bemused resentment of people's expectations and the reality of being an aging actress. Hard to imagine she was terribly bitter about Rogue One.

http://www.latimes.com/entertainment/movies/la-et-mn-carrie-...

When some moviegoers complained on social media about how much older she looked in “The Force Awakens” than when she had last played the character more than three decades earlier, she retorted on Twitter with her typical sharp wit, “Please stop debating about whether or not I aged well. Unfortunately it hurts all 3 of my feelings.”...

...“It's not always fun, but it’s certainly life-changing,” she told The Times last year. “I have been Princess Leia exclusively. It’s been a part of my life for 40 years…. I’m like the diplomat to a country that I haven’t been to yet. I am that country.”

But she was an actor; this was the thing that she chose to spend her life doing, and something she loved doing. She wasn't collating expense reports - she was doing something very creative, with like-minded people, to create something enjoyed by millions of people world-wide.

I bet there are plenty of actors who said, on their death bed, "I wish I had spent more time on stage".