The key difference is that all those interesting developments in the creation of the story show more imagination than what the films ended up being. Brainstorming in the form of written drafts, pre production art work, set design etc are great but they are essentially meaningless with the end result.
Which is why I'm always harping on about judging the movies as they are presented and not delving too much into how they were made because it's irrelevant if the outcome of those efforts differed so drastically from their original iteration.
The phrase, "The road to Hell is paved with good intentions" seems acutely applied here. You can't make a judgement on a piece of art based solely on the intention of the artist, no matter how well meaning. It may be a factor in how you critique it, but ultimately the work has to speak for itself. Constantly having to justify creative choices made in order to prop up the success of the story, only further exposes it's weaknesses.
Either a story works or it doesn't. To break it down as simply as I can here are the criteria for how I make a judgement on whether a story is good or not.
1. Is the premise interesting?
2. Do I relate to the characters?
3. Does the story effectively follow the basic structure of fiction?
4. If it's a specific genre, does it honor the tropes of said genre in a meaningful way?
5. If it's part if a series, does its continuity match the other installments of the story.
6. Is the theme of the story evident and how well is that theme presented?
7. Am I enjoying the story while watching or reading it?