The Pope says daily Mass in public. Many have told us (some very loudly) how important the liturgy (from the Greek for "public service or work") is to the work of salvation and evangelization. Well, Pope Francis puts the liturgy front and center: by celebrating daily Mass, as every priest must do, in a simple, dignified, and very public setting. Why wasn't this done before in such a public manner? Never mind. Let it also be done by future popes. I hope the future popes among us are taking notes.
And ordinary people--the common priesthood of the baptized--assist in this public work. That's why this image is so powerful. On May 1st, the day of the worker, we see the most important work, a public work involving and including both types of priest, the ordained and the lay.
And so I propose this thought: Pope Francis is the most liturgical of recent popes because he dramatically and very publicly puts the daily liturgy at the center of each day.
(Image source at this Vatican link)