Ozymandias does not bother me that much, because he would dress like that being that he is less of a hero than a marketing campaign. He would be a parody of a superhero, trying to sell himself to the public while making sure his hair looks great. Think lead singer of a poseur nu-metal or emo band.
Silk Spectre is all right too, because she is for all intents and purposes a stripper masquerading as a superhero. Which is what that costume brings to mind. The fact that she looks like your Catwoman/Elektra movie versions is half the fun, if it is done right. She's a little girl lost, dressed like a whore, because that is how her mommy got attention and because that is how she thinks the world works.
Rorschach is also good in the shabby worn down way. This guy tries, he really does. But he is low rent, so he would look like that.
Comedian looks great too.
Nite Owl also make sense. Nite Owl is a geek who grew up wanting to be a hero. He was so pathetic that he didn't even come up with his own idea, just took up the mantle of a retiring hero. Came up with goofy little toys and tried to hang with the big guys. He can't even get it up, unless he pretends he is somebody else. He would be the guy dressed like Batman from "Batman Forever"... actually strike that, he'd be Robin from "Batman Forever". Trying to project toughness and failing miserably at it.
All in all, the update they did to costumes makes sense.