Below this post, I have posted Pope Francis' Epiphany homily which is very good and I've incorporated some of it into my revised homily today at our 11 AM Mass.
It seems to me that Pope Francis has made a wonderful case for Mass "ad orientem" in some of the words His Holiness uses in his Epiphany homily.
Vatican II has shifted (as spirit of Vatican II theologians have insisted) the center away from God and to us. We are at the center as God comes to save us as though in an "enclosed circle" looking at each other rather than beyond to God. But we really aren't the center, the sun or the light and the pre-Vatican II Church with her organic theology and sacramental liturgies makes that perfectly clear. Not so after Vatican II, the center is changed and out of focus to say the least especially in reformed architecture of our churches, and the reformed liturgy with the celebrity priest facing us down and we looking to him and to each other rather than Christ.