input: Participation of the Laity: The Church, therefore, earnestly desires that Christ's faithful, when present at this mystery of faith, should not be there as strangers or silent spectators; on the contrary, through a good understanding of the rites and prayers they should take part in the sacred action conscious of what they are doing, with devotion and full collaboration. (Sacrosanctum Concilium 48) ...this sacred Synod strongly urges pastors of souls that, when instructing the faithful, they insistently teach them to take their part in the entire Mass, especially on Sundays and feasts of obligation. (Sacrosanctum Concilium 55) [Things to think about] 
output: The Rosary is great. Our family does it almost every day. But there was a tradition during the Extraordinary Form of the Mass to do it while the Priest was presiding, because the faithful didn't understand Latin, and they were not included as participants in the celebration. Having a lay person read the first or second Bible reading or leading prayers after the homily, demonstrates that reading the Bible and praying is not just for Catholic Priests and Protestants. Bible reading among faithful Catholics has increased since Vatican II. Having the priest face the audience is more controversial among Traditionalists. However, Vatican II never mentioned it. Personally we are more engaged an present when we can see everything. However, there is certainly a trade off.