Look, there are very few good/great choices for our next Pope. What we need to do right now is to stop the bleeding and start immediately to fix this awful mess. Muller can do that as well as anyone...then we can discern who is the best long-term choice.
Francis was educated in post modern Jesuit moral theology, which was inspired by German Existentialism. In this approach moral principles are acknowledged, but observance of morality, esp sexual morality, is comsidered relatively unimportant.