It's an interesting umbrella discussion, actors evaluated for work in roles they're not ideally cast to play. In this case, the weight afforded the character in the story wasn't matched by the sensibilities -- that meld of personality and presence -- of the actor. I remember when John C. Reilly played Stanley opposite the Richardson Blanche. Reilly is a brilliant actor, but the play didn't happen as written with an ideal Mitch mis-cast as Stanley. This situation with "Clements" is far from a direct parallel, but on the way home I tried to think of another time I felt an actor couldn't make a role work.