“About two-thirds of the way through production, we changed the story to Judy’s story… we said, let’s just try, as an experiment, making Judy the main character — since she’s an optimist, she sees the best in everything — let’s try making it her story and see what happens.” – Zootopia director, Rich Moore (x)
If you ever worry that it’s too late to change a story remember that zootopia changed their lead on a fully animated film a year before release…and pulled it off. Yes they had to scrap work that had been done, but the film was better in the end.