There's nothing wrong with organization, management, or leadership in the church, of course. But the worldly 'machinery' we're talking about here is much more than that.
One of Rick Warren's mentors, Peter Drucker, is a 96 year old communitarian mastermind whose work is behind much of the organizational transformation taking place in the world today as well as much of the purpose-driven machinery. He is obviously pleased with the success of PDL and calls Rick Warren "the inventor of perpetual revival".
Some of the methods are talked about in this article here - a long article, I'm afraid, but note the first paragraph and the chart at the bottom for a broad overview of just how much transformation this 'system' is capable of:
PURPOSE-DRIVEN PROCESS
This pragmatic system works, both in the world and the church, and can even produce the "excellence" the world is so thirsty for these days (a fact which must make another Warren mentor, Robert Schuller, very happy as he said last night on Larry King Live, in response to a question regarding his position on gay marriage: "I am addicted to excellence, totally committed to excellence. That's where I'm coming from. It's a different position on this and any time there's a controversy, choose the interpretation that is more excellent").
Actually, this elaborate, and extraordinary, system of excellence and concensus would be a great thing in the church, I suppose, if it were only possible for men to save anybody.