Now that I have a few minutes I thought I'd elaborate on what I said earlier as it seems to be an unpopular sentiment..
Keep in mind that I'm not giving up on this movie or saying that it's going to be awful. I'm just not a fan of the mask.
It looks like it was designed to be menacing, but it just looks silly to me. I think I'd like it better if it didn't have the exaggerated piping. It would also be nice if it looked it had some sort of storage capacity. The only function I feel that this mask could serve would be as a Hannibal Lecter type restraint.
I'm not the most knowledgeable comic book person, but I think it would have been preferable for them to choose a different method for dispensing his drugs and incorporated the mask in a less prominent way.
Hopefully when I see the movie, I'll find out that the mask works well and learn that I was wrong about it. However, as of now I think it is a questionable costume choice. No one here has to agree with me, but I hope you guys can at least respect my opinion.