It looks pretty good, sure - but let's face it, as far as costume designs for recent superhero films go, this was going to be a really easy one.
Consider - in most other cases, you might have assorted problems:
1. Making the hero not look stupid while sticking to a classic design, because tights just don't work in real life the way they do in a comic.
2. Updating the look to something that still looks cool but has a connection to the comics.
3. Making something that'll work in the endless CGI sequences. Hence the common move to costumes that are leather and plastic -heavy. (as opposed to fabrics that flow and wrinkle)
But in this case, we're dealing with power armor. Power armor practically looks cool by default, sleek shiny metal actually looks as good - if not better - in real life as it does on a page, and it happens to be one of the things that CGI does best. In fact, a good effects house could have probably done a solid job on something like that 15 years ago. (Assuming computer effects, that is - serviceable effects using a good costume and miniatures could have been achieved even earlier.)
Which doesn't really make me like the design any less, I love power suits...
