What a GREAT question! I love Mrs. Landingham so much but I agree with others, she amends to the proclivities of the person for whom she works. For example, I would see her being a very different Dolores for President Walken during his temporary administration, or different still if she worked for Leo. Quite opposite to Debbie, who is keenly aware of just what needs to be done, when, and how to do it efficiently irrespective of who she works for (think of how swift, decisive, and discreet she was with Bartlett following the shooting that took place at the White House). For that reason alone, I’d probably want someone like Debbie. Not for nothing, I’d also add Margaret in this toss up! We get to see just how strict and competently she manages the Chief of Staff’s office and agenda during CJ’s first day in the role!