REUTERS — “Succession,” the HBO drama chronicling a media mogul and his children’s battles for control of the family company, returned this week for its fourth and final season. Few are watching more intently than a group of U.S. law professors dissecting the show’s juicy legal issues. A dozen professors and lawyers formed a weekly online discussion group cheekily named the Waystar/Royco School of Law—a reference to the fictional company and family at the center of the show—and are producing an upcoming issue of the DePaul Law Review devoted to “Succession.”