If there is helmet, and wouldn´t feel sad about it, i would think it was trhe most ridiculous thing ever.
And it´s funny how people say that their are indiferent, when comic book fans usually want every little crap to be equal to the comic.
The pathetic part about the all "no helmet" is...why?
The only way i can see it is because they want us to see Hemsworth face, but that is just ridiculous, so, there must be another reason.
But the main problem, the reason why he has a helmet is because is a NORSE GOD, a viking, and vikings use helmets.