From the trailer it looks like we got a new MC, or atleast the whole game is more french (because your in France).
Going to miss the wonderbread mouth-breathing american tourist in Italy like SE4 had.
As for game-play, they added Souls like invasions in SE5 and they still have the co-op campaign (which is the important part). Beyond that, looks about the same ol’ shooting nazis like we have always had.
Yah, its optional.