The director already said that there is not going to be any size enhancement from "post venom" injection.
Not only is Tom Hardy a middle-weight by definition, he is also about 50 pounds lighter than Christian Bale. This is kind of disturbing for me, but how do the rest of you feel? From what little I have seen in the trailers, Hardy, or "Bane's" voice is barely audible whilst wearing the mask which leads me to believe that a professional wrestler could have easily filled this role.
I know that is far too late, but even Dwayne Johnson looks more hispanic than Tom Hardy does (for those of you who don't know, Bane is Brazilian), and has the acting skills to pull off this role while remaining true to the comic book aesthetic.