He has to be familiar (and competent) enough to keep viewers satisfied, but also distinct (and flawed) enough that when the star returns, everyone remembers exactly why they love him so.
He has to have familiar qualities that keep viewers satisfied but he also needs qualities that are flawed.
politician is pushing it or uh or Mitch Snider or Mitch Snider oh okay well see that's a DC thing Mitch Snider is the the advocate for the homeless that uh he he said      said said it out here in Washington uh Washington but he started the um uh  the movement for creative nonviolence