Personally, I believe that the greatest problem with the NO is the way that priests celebrate it. As many have noted, the campy, clappy, "let's hold hands and sing Kumbaya my Lord" music has no place in liturgical worship. In fact, because it is just aweful music, it prabably doesn't havce any place anywhere. It's insult to the minds of the faithful, but what is much worse, it does not direct the mind to God, but rather to the "community." This is a sort of soft idolotry, where attention to God is replaced with attention to man. I'm not sure how this can be called worship in any legitimate sense. Along similar lines is the problem of the priest facing the people rather than liturgical East. In his book, The Spirit of the Liturgy, Cardinal Ratzinger recounts the rich Christian symbolism that accompanies the tradition of a liturgy celebrated ad orientem. It's not about facing "away from the people" but rather, about the priest leading the community in worship of God, among other things. When the priest is turned towards the people, the community is again closed in on itself, and the focus is on man rather than God. I don't think it would be terribly difficult to fix these problems, though. All the Pope would have to do is mandate that the Liturgy is celebrated with sacred music, and ad orientem. Not sure why no Pope has gotten around to doing this.