My parish has definitely seen a creeping increase in Sunday post-Communion announcements. Our associate pastor counted thirteen last week. With a grimace.
Take the purple chair, and knowing you are immune from angry parishioners (no guarantee on the comboxes, though) pontificate on the ideal post-Communion practice. Remember that the post-Communion prayer is mandatory, not the announcements. Don’t forget the choreography: do you have people stand for the prayer and remain standing for announcements–even thirteen of them? Do you fiddle with the rite and include announcements before the prayer, essentially placing the post-Communion piece in the concluding rites before the blessing? Do you seat people for the prayer and keep them seated for the announcements? Do you move announcements to another part of the Mass? (In my first parish, the preacher would announce before he began the homily–what do you think of that solution?)