Mass announcements should be done away with because they seem to interfere with the prayerful focus of the liturgy and because the church bulletin covers the same thing.
After receiving communion I am in prayer and want to continue in the Spirit of prayer and focus after having just received the Lord. I want the Mass to continue with the Final Blessing and Dismissal and the closing song.
At my church the pastor takes announcements to the extreme. Father’s announcements take anywhere from seven to 15 minutes. Then we stand up and after being gored to death with several announcements the majority of which are trivial we get the Final Blessing.
I hope and pray the Church addresses announcements and moves them out of the liturgy so as not to interfere with the offering of the Mass.