You know, C-F, In sometimes wonder why if it is not really a Peter-Problem but the fact that Walden all but leave out Aslan. There is no room for Peter to be other than flawless when Aslan who really is flawless stays in the box. Doesn't Peter realize in the book that his trust in Aslan wasn't 100%? In the film he has to be the hero but in the books he's always the deputy-hero for there's Aslan in charge.
I don't even think Walden didn't want to have a perfect boy-hero, they just didn't want a supernatural hero, a god, to speak plainly. They wanted to create a fantasy film not a religious one.
It is different, to me at least, with a comparison between book and film and reality. When reading the books I never was much interested in Peter. Nor in any of the other Pevensies, by the way. They were too palish to me, they never came really alive. All in all I took them as symbols not as real people. When reading the books the most interesting person form me was Mr. Lewis.
In the movies the charakters of the books really came alive for me for the first time. I got interested in them as people and their different ways to deal with their situation - being kings and queens, being young people trying to grow up, being in close touch with the One supernatural being - became interesting to me, personally.
It's quite similar with the saints in church. Normally I think of them as an assortment of positive traits and decisions I should try to copy. But since this is impossible, I normally quit very soon.
Now, if I come upon a story of a saint in trouble (and they do exist) and somehow learn to know him as a real person, somebody who didn't start with being holy but worked through towards it, the thing's quite different. We start to be siblings then, working for the same thing out of the same love.
It's like that with Peter for me in the PCmovie. From being a sovereign lord in the books he changed to be brother for me in the films. I like that change and it encourages me to put my trust in our real sovereign Lord.
Have a nice weekend and a joyful sunday, everybody