And possibly a "shared world with other players"?
In an interview with GameReactor, Assassin's Creed IV: Black Flag lead designer Jean-Sebastien Decant promised that the next game in the franchise would be "much more on the next-gen side."
He described Black Flag as being "on the edge," as it was developed before the next-gen systems were released. When Ubisoft began working on the title, they had no idea what the system specs would be...