Anarchists/communists vs nationalists, cool. The political philosophy of Bioshock has always been one of my favorite aspects of the series. I have heard some people give their doubts about this game, the sky setting in particular, but I think really giving it a new setting will stop it from stagnating and give it a fresh perspective.
Also is that a Mauser pistol I see in DeWitt's right hand? If so then I'm extra chuffed.