Eh, I'm okay with modernized updates, as a lot of the designs could look silly on film.
As much as I'd love to see a live-action Wolverine with his mask, I think it's sort of like Hawkeye... It'd just look a little silly. I think Cap's uniform in his solo film looked pretty cool, but the mask redesign in Avengers looked downright silly. Made him look cross-eyed.
I do think Hawkeye's costume was a tad too modern when paired with the others, but it's not one I had any real issues with. They did a great job making Thor's costume look un-silly, which is the one I'd had my biggest doubts with in the first place.