The rubric allowing brief announcements before the end of Mass is one of those experiments from the 1970s that went wrong, terribly wrong.
The period between Communion and the final blessing is not (again not) supposed to be a parish social hour, nor an opportunity to throw-in all kinds of announcements and ceremonies and whatnots.
The rubric makes clear that there are 2 conditions.
- The announcements must be brief.
- They must be necessary.
The first one is self-explanatory, although it is often ignored. There is nothing brief about 15 minutes of announcements.
The second is problematic. What makes it “necessary” to place the announcements before the final blessing as opposed to after the final blessing? It makes no sense to place the announcements before the blessing. The word “necessary” means exactly that: necessary. So again, what makes an announcement so necessary that delaying it by 10 seconds would have a negative impact on the parish? I say nothing.
It’s part-and-parcel of the loss of a sense of the sacred that has permeated the Liturgy in the last 4 decades. What the Church calls “necessary” or “extraordinary” is transformed into the normative.
Announcements belong after the final blessing. There’s really no reason why they cannot be done there.
Having said that, the Missal does allow it; but only under those 2 conditions, brief and necessary.