IMHO, mandatory recycling isn't dumb or worthless... Requiring a certain percentage might be a little much, but just like with residential/office recycling it takes some time to get used to... Keep two trash barrels onsite and have things separated at the point of waste.
One of the best uses of a "green" roof that I've seen, is a community garden on top of housing. Around here, there is a huge demand for community gardening space, and very little public land that is available/suited for it.
I agree that the regulatory aspects of the LEED program are a little ambitious, but I don't think all of the ideas are wrong or bad. They just need time to become easier to implement and work their way into standard practice.
