It seems to me that too many dramatic animated features labor under the assumption that audiences want to see three-dimensional (ie., psychologically three-dimensional) characters in the lead roles. That can't be true! true.
Would the Lone Ranger show (above) really have been improved if the ranger had taken off his mask and said to Tonto: "Tonto, it's not easy helping other people day in and day out. Did it ever occur to you that maybe I'd like some help too? I'm a man and a man has needs!" No, it wouldn't have been improved! The third dimension is not for the Lone Ranger or any other mythic character.
Aren't you glad that James Bond (above) is two-dimensional? What about Snow White in the film by that name? There's not a three-dimensional character in the film. "Pinnochio" contains only one 3-D (actually 2 1/2 D) character, Jiminy Crickett, and he's not even the character the film is named for. "Alice in Wonderland" and "Fantasia" contain no 3-D characters. The early, vintage Disney didn't believe in three-dimensions and he was right. Maybe he took his cue from the best children's writers of them all, the Brothers Grimm (below), who avoided 3-D like the plague.
An added benefit of committing to 2 or 2 1/2 dimensional characters is that it solves a lot of story and directorial problems. 2-D characters are naturally extroverted. They want to do things. They want to talk and act in a stylized way. It's easier to fit music to them. Stories with these type of characters exert pressure on writers to come up with momentum, thrills and suspense. Dare to be two-dimensional!