Thinking more about the Tridentine Rite: whenever I have encountered it on the continent, rather than being something for the elderly, seems to be filled with young people. We struggle with filling our seminaries, whereas wherever the old rite is celebrated I get the impresssion the problem is building seminaries, or at least ensuring that there are enough places for students. The priests who celebrate this rite, on the continent, and apparently in the US, are not the elderly, but men in their twenties and thirties and even in this country they seem to be the zealous, devout and learned. Far from dying out there seems to be a serious growth in the Tridentine Rite. One could talk about it as a youth movement. Indeed there seems to be a fecundity about it that is lacking in the sterility of "mainstream" liberal European Catholicism.
Cardinals like Ratzinger, Castrillon de Hoyos, Medina Estevez and many others have been happy celebrating the "Old" Rite, even before the setting up the Ecclesia Dei Commission to reconcile Archbishop Lefebvre's followers. So many people have been seriously concerned about how the Mass is celebrated, there were several documents by the late Pope on the celebration of the Mass most of which were ignored by the bishops to a greater or lesser degree. Pope Benedict has always been involved in the Reform of the Reform, in his book "The Spirit of the Liturgy", which is really a manifesto for Reform, he wrote about the importance of priest and people facing east, the ancient direction for Christian prayer (not forbidden by the council), recovering the sense of the sacred, the need for silence, the need for a sense of continuation.
The bishop's have not responded to other forms of encouragement to reform the liturgy. Any liberation of the "Tridentine Rite" would be intended to encourage a groundswell movement to reform the present rite of Mass, with the emphais being placed on the choice of priests, rather than the permission of bishops. This would seem to be a winning course of action, as liberalism by its very nature shows itself as being sterile, as far as practice, catechesis, vocations and even the growth in family are concerned.