I sincerely hope though that the example of humility, compassion and care that Pope Francis set is a bell that can't be unrung.
Exactly this @Uricon2 - it will be very hard, even for the most hard line Conservative, to revert back to the pomp, wealth and hierarchy that was normal pre-Francis, and not look like a raging hypocrite whilst alienating the masses in the developing world where the future of the Catholic Church lies.
Francis was popular because he was relatable, as much as he was compassionate. He seemed like he had lived in the world and understood the issues facing normal people. And considered himself a normal person, albeit with an extraordinary job.
Ratzinger was a cold authoritarian in expensive shoes who spoke theology, not humanity, in contrast. Going back to that will lose as many as it will comfort.