so u wanted a movie that was nothing like the graphic novel...ok
Actually, I think I'm arguing for a film that is pretty darn close to the graphic novel, just closer to the spirit rather than the letter. What works in a graphic novel doesn't necessarily work on screen, especially with the extremity of what Frank Miller does.
To make Snyder's 300 a good 300 film, this is what I would have done:
-Edit some of the dialogue. Keep the grandeur (what is an epic film without grand dialogue), but change some of the sillier-sounding lines. Dialogue in a graphic novel can afford to be more over-the-top than it can be on film.
-Drop the deformed women and transsexuals from Xerxes' tent. There's already a subtext to his character - there's no reason to make him an overt sexual deviant. And get rid of the silly anthropmorphic goat. After all, Miller didn't do it.
-Flesh out the Spartan army a bit more. This was started, but we needed a little better picture of who some of these characters are.
-Ease up on some of the MTV editing. Effects like that work better in smaller doses rather than all the time.
-Don't use monsters. They're silly, and they weren't part of Miller's graphic novel to begin with.
-Drop the Gorgo subplot. It brings the film to a halt, and doesn't add much depth to the film. This is a story about the 300, not about the behind-the-scenes bureaucracy. Again, something that wasn't part of Miller's graphic novel to begin with.
-Rear in the performances a little. Sometimes, they're just a little too hammy for their own good.
-Have someone in the film acknowledge that the Spartans are far from a perfect society to bring in a bit more thematic complexity, rather than shameless glorification.
Make those changes and I think you've got a winner, as well as something that is fairly close to Frank Miller's graphic novel, but just acknowledges that there's a difference between what works on the page and what works on film.