The answer to this question will not be in its final form for a long time. The papacy only ended a few weeks ago. Historians will have to look at several things before they will be able to reflect back with greater precision that a video or a blog commentary can provide in 2013. There are several things that Pope Benedict's 8 year reign that give good indicators as to what we engage with in the years ahead. Many more intelligent than I have thought this question through, but Father Robert Barron of the Archdiocese of Chicago has made a good first attempt when he posits that Benedict will be remembered for:
1. being able to give a more authentic interpretative key to the Second Vatican Council; that is, naming the true mission of the Church;
2. being able to present the objective truth of the faith as taught by the Church these 2 thousand years with the clear awareness that the truth is about the Divine Love lived in joy; this is often called affirmative orthodoxy: the big 'yes' vs. the fat 'no';
