The Office hints and spoilers are just racking up. The latest is this interview with Paul Lieberstein, who says that the “rotating center” of focus during this season may not last, what with the departure of Robert California and Nellie Bertram. “I have a romantic feeling for the simplicity of the single-manager structure. Next year might see a return to it,” he says. He also promises that guest stars Chris Bauer (Frank Sobotka on The Wire) and Georgia Engel (Georgette from The Mary Tyler Moore Show) will appear later this season. Cool news, but doesn’t it kind of feel like this show is frequently stuffed with unnecessary new characters? Maybe next season’s one-manager tone will be a little more pared-down.