So far 5 months in, i still cant figure out how these are summoned, wowhead has slim information that the captain's whistles summoned them, but also that doing the kills on main road would spawn them.... Whistles are gone... and after full nemesis farming, i have not seen any of these captain's.
Could someone with twitter ask dev's if its removed from the game, if so they should change the ach or remove it...trying to figure out something that most likely is removed