Hollywood often does such a bad job translating comic books to film, it's better to start from scratch. When movies create their own original superheroes, they can have the cool comic booky trappings, without the need to include/ignore/defile decades of print history.
"If it works (The Incredibles) you get something really fresh. When it doesn't... it's only about as bad as a superhero movie based on a comic. Click through for our list of superhero movies that didn't have a direct comic-book heritage."
Check out the whole listing in their article HERE or at the source-link below.