Even while working to improve its behind-the-camera diversity since 2015, one aspect of FX shows remains constant: They celebrate the showrunner as auteur, showcasing unique voices in a landscape where much television feels made by committee. With something like the anthology series Fargo, which returns for a fourth "year," that means putting an abundance of trust in the creative vision of Noah Hawley, whose TV work can at times be inconsistent but strives to be unlike anything else you're currently watching. While the show's name continues to pay homage to the original 1996 Coen brothers film, …