Then you do not know history well much at all. The inspiration for horns on helmets has been around for over a thousand years. Even in modern times, soldiers have gone as far as wrapping human skulls and ears on their armor. Such things are not that far fetched. Pick up a history book sometime, reading does wonders.
While I like the antlers from an esthetic perspective, they hardly seem practical for a warrior using stealth as his main weapon. And the thing that makes military armor and clothing so fascinating from a designer's/artist's perspective, is that even though it's very pretty, very powerful and intimidating, every single detail is there because it's needed to, because it's practical. And that's what I'm missing in this design. Other than that of course, I hardly need to tell you how gorgeous this is.
I suppose the ideal armor for a sniper would be as invisible as possible, but you're right that's not very impressive from an artist's/esthetic perspective. But I guess this only goes for the sniper: the other supersoldiers have practical use in eye-catching and impressive armor in the way that it overawes and scares the opponent.