I was under the impression that the co-redemptrix issue had already been dealt with by the Vatican; that it was deemed theologically correct, but that it was left unapproved because of several concerns, a number of them ecumenical. In a perfect world, we would call Queen Mary co-redemptrix; we could shout it from the rooftops. Unfortunately, people are uneducated, and the Vatican has to think of them and how this would effect their faith.
It seems everything today has to be sacrificed to the sacred cow of ecumania.
Once upon a time the Church sought truth before all else; now's it's ecumania or death.
Who cares about Catholic truth when "we're building a civilization of love"?