Quote:"Michael Clarke Duncan as the Kingpin tends to get less of this grousing because, as the filmmakers said at the time, no one else had the physical chops to play that role and could act at a level above "pro wrestler yelling a little more quietly than usual."
The thought process was that they needed someone to be physically imposing (the body of a wrestler) but who could act. I don't think Gandolfini fits that first requirement. And just in case you come back with "but you could use special/visual effects" then the same could be said about any actor then.
The role of the Kingpin is extremely difficult to cast, and I think they went with the best possible solution with MCD.
Have you ever seen the Sopranos? He's not only a big guy but he's VERY imposing.