Let's just cut the crap here and accept a few things:
*John Williams' Superman march is one of the greatest musical compositions of all time
*It embodies all the core elements of Superman: it's bigger than life, noble, heroic, majestic, powerful, and even gentle and honest
*No new theme will ever capture the spirit and personality of The Man of Steel like Williams' theme.
As Darth Vader once said, "search your feelings, you know this to be true."
Why even pretend anything else could ever work?
As for the credits sequence, that might have been the best thing about SR. I'd like to see something as fun, epic, and bombastic.
\S/