The helmet isn't believable as proper head protection- it makes me wonder why it's even there. just give up and give him a mask, or give him some proper protective headgear.
And the outfit is out of style- this was thought up back in the 40's, and style has changed considerably since. The way the strips are layed out on his belly is just lame. If they were moved to extend to his shoulders, maybe in two sets, that would be way more modern, way more cool.
And the white arms thing is clearly something they're already struggling with, lets just cut that out all together.
Wait, I found something fitting all these qualifications.
Spoiler!!! Click to Read!:
YES! A believably functional helmet, and an updated costume that really knows style, with tight pants that show off his masculinity! And hey! They even updated his shield!
. . . .