Forgive me for this, but… Superman is among the suckiest when it comes to costume design. I mean, his costume was cool until some decades ago, but now it’s so demodé (is this the right french word?).
Batman, that’s a well dressed DC hero. He’s never out of style. Aquaman is another one who’s elegantly covered. The most recent green lanterns are also good-looking in their clothes. But some DC heroes like the martian guy, Superman, Wonderwoman, Blue Beetle, among others, should definitively look for a new tailor.
Ren: Costume design, like humor, is a relative thing; what works for you or me might not work for someone else. One thing that CAN be judged objectively, however, is the historical impact a design has had… and whether one likes Supes’ costume or not, the fact is that it has become so famous, that the very word ‘superhero’ immediately brings it to mind for most people. They’ve tried altering it thru the years (remember the four replacement Supermen they came up with back when Supes was ‘dead’? I actually liked some of their costumes better!) but they always get back to this design.
Hopefully in the movie it will have brighter tones.