A number of comments on a previous thread (November 27) have raised interesting questions about the differing degrees of innovation in the liturgical actions of different Pontiffs. I reprint below a couple of old posts of mine (with original threads) which point out that:
(1) It was printing that enabled innovators to impose radical innovations overnight (e.g. Cranmer, Whitsunday, 1549).
(2) S Pius V was not a centraliser imposing uniformity, but a conservative repressing innovation.
(3) The actions of S Pius V, then Urban VIII, then S Pius X, then B Paul VI, show popes gradually becoming bolder in imposing novelties to be accepted and implemented "with immediate effect".