Schwartz doesn't seem to be getting much of a chance this offseason, so that alone leads me to believe that he isn't going to be getting a head coaching job any time soon if the Titans D doesn't drastically improve. As for a scheme change, if Fisher tells Schwartz to do it he will. Or, if talent level dictates it, it would likely happen. We'll just have to wait and see. It's not like he's unwilling to ever blitz. They blitzed a lot in specific games. But I don't forsee any change from a standard 4-3 defense.