BOOO ADDING AN ADDITIONAL FUNCTION TO THE GAME IS BAD.
Holy fuck are gamers so self entitled that they'll complain about additional aspects of the game (like multiplayer) being added? It's not like every game sacrifices single player for multiplayer. Although if the game does vice versa everyone's okay with it.
That's because Batman games shouldn't have multiplayer at all. It's okay with other games, sure, but fucking Batman? Are you serious? The only thing I could think of, is if the story has multiple characters or something or is built for co-op, but multiplayer that's like Assassin's Creed where you're working as a team or something, no fuck that shit.