I think a few things are certain now (if they weren't before). 1. Defense really needs to be taken seriously and emphasized as much as everything else. Pick a consistent backline and stick with it and use the players in their natural positions for heaven's sake. 2. Kroos is a great squad option but not a viable starter in the current formation. 3. Löw needs to branch out a bit tactically and experiment to avoid dependency/reliance on Klose. Basically be more open to deviating from the norm given all the versatile and diverse players he has available.