Pope Benedict XVI does not expect busloads of both converts and born Catholics to be flocking to the standard of the Catholic Church. He expects them to come in trickles.
To establish small communities of souls with mature faith, one has to expect a few to come in. A big crowd will be unmanageable and, nearly impossible to attain mature faith. And like the Chosen people in the Old Testament, they have to be separated from the rest of the world. The Jews did not observed this necessary separation, so they found themselves, constantly, contaminated by the paganism of their neighbor.
We are surrounded by modern paganism, which is worst than the paganism of old. And this for only one reason. The modern pagans came from the Catholic Church. They could only be worst than the first pagans because the corruption of the best is the worst.