Not ever having been an agent myself, my sense is that upper-level agents who have the most power, who can move people through the system more easily, are less willing to take on the volume of work to break somebody new. And then lower-level people, if they are willing to take on somebody new, they don't necessarily have as much sway, and it's harder for them to push somebody through.
John LandgrafI don't think I ever had any relationship with any showrunner, over time, with whom I didn't have conflict.
John LandgrafIt's not that writing staffs don't change at all, but they don't change very much. Directors are freelancers. There are directors who do five or 10 episodes of a show every year for years, but most directors are freelance, they come and go.
John Landgraf