I'd have to disagree with some of the general opinion, personally, I think the face on the ring is perfect. Without it, the ring would be too lifeless and dull. Plus it adds to the whole irony of the happy/cuteness of the shirt contrasting the evil subjects its parodying.
So yay face!
Though as a side note, I also liked the shirt better in the other gray/brown color, I thought the image stuck out more. But maybe I'm just a weirdo.