If you're thinking of writing your Bishop in regards to Traditionis Custodes, READ THIS FIRST. Father gives some very sound advice.
- Explicitly flag in your letter that you, as an EF Mass attendee, affirm the validity and legitimacy of the liturgical reforms mandated by Vatican II. Your bishop will be looking for this information, because according to TC §3.1, if the bishop cannot affirm that a given EF Mass community accepts the legitimacy of the liturgical reforms, he will not be well placed to support generous future EF permissions.
- On this note, anything you can say about yourself to reveal your acceptance of the validity of the liturgical reforms mandated by Vatican II, is worth mentioning. (For instance, if you have deep love for Sacrosanctum Concilium, or are active in your local Ordinary Form parish, say so). These things might sound trivial, but they provide concrete counter-evidence to the bishop and his diocesan curia that EF Mass attendees in the diocese are not accurately characterized by “a rejection not only of the liturgical reform, but of the Vatican Council II itself”
- If you are not prepared to say anything in support of the liturgical reforms mandated by Vatican II, at the very least do not highlight your quibbles with aspects of the post-Vatican II liturgical reforms. There is a time and place for sharing legitimate concerns about abuses and other issues in the Ordinary Form. But if you want to see liberal permissions for the EF Mass continue under TC, your goal at this point should be to help your bishop see that most members of the EF Mass community do in fact support the liturgical reforms mandated by Vatican II (see TC §3.1).
- Letters from groups rather than individuals, are always better (see TC §3.1). If possible, draft a community letter and gather signatures.
- If your practice has been to attend EF Masses in a parochial church on a regular or semi-regular basis, and the absence of such Masses (which TC §3.2 would appear to call for) would cause difficulty or hurt for you, say so. This will help the bishop recognize the need for creative solutions in the future.
- If you feel called to make a profession of obedience to your bishop, or to share with him your desire to be subject to him as “to Christ, even as Christ is to the Father,”3 this would be an excellent occasion to do so. If you show your willingness to trust your Bishop and cooperate in his mission, you give him in turn an opportunity to restore his trust in the EF Community and treat EF Mass attendees as allies in the goal of in bringing about “the concord and unity of the Church” (TC, para. 2).