Its basically like writing code. Aladdin was prototyped, Proof of concept, then put into production. So if anything needed a complete re-write, it wouldn't affect final production.
Hayao seems to doing continuous refactoring, so as long as you don't need to edit too many scenes already drawn you can potentially come out with a good final product while giving production as much time as possible.
Hayao seems to doing continuous refactoring, so as long as you don't need to edit too many scenes already drawn you can potentially come out with a good final product while giving production as much time as possible.