As for the liturgy, the Novus Ordo is not going anywhere. The Tridentine Mass should be widely available, preferably in a Tridentine Rite so that those who wished to attend would not be at the mercy of a priest or bishop who simply refuses to permit it.
Actually the Novus Ordo should be defined as "the optional Vernacular Rite of Paul VI" and the inaccurate term "Tridentine" should be recognized as the only "Latin Rite."
Ah, but will it be true ecumenism, in the mold of Bl. John XXIII?
We address Ourselves now to all of you who are separated from this Apostolic See. May this wonderful Spectacle of unity, by which the Catholic Church is set apart and distinguished, as well as the prayers and entreaties with which she begs God for unity, stir your hearts and awaken you to what is really in your best interest.May We, in fond anticipation, address you as sons and brethren? May We hope with a father's love for your return? (Ad Petri Cathedram §79-80)