For me,the absence of Tom Hagen was the most disappointing part of Part III. Duvall turned down the role over a salary dispute. He said that he wouldn't have minded Pacino getting twice what Duvall was offered,but the figure was more like 3 or 4 times the amount. It would have been great if they would have negotiated with Duvall and got him to sign on. I would have loved to see the character arc continue for Hagen. Not even Father Guido Sarducci's appearance can ease my pain.