In live-action, writing, production and editing happen in discrete stages. In animation, they overlap - happening simultaneously. This allows a real dialogue to occur between the writer, the director, the actors and the editor, and it makes the writing process a lot more collaborative and a lot less lonely.
Michael ArndtIn terms of writing characters or stories, at least initially, there's no difference between live-action and animation. A good story is a good story, whatever the medium.
Michael Arndt