I agree with you, James - no one ever said that LEED (or any other rating system) is perfect. It's a starting point, and it's been a good start in my opinion. Now it has to keep evolving. It's simply a tool that we can choose to use, or not. LEED 2009 addressed a number of issues, but I feel very strongly that it needs to go much further. We have a long way to go before we are approaching anything close to real sustainability in architectural design & construction.
The problem we still face in practice is just getting to that starting point. Asking clients (private, not government or institutional) to build to a LEED standard can still be very difficult because of the cost of certification. I know, I know, it's a small percentage of the overall project cost...but try telling that to a client who needs to get the greatest value out of every penny. It's a tough sell, and as the certification costs continue to go up (along with the costs of exams, workshops, reference guides, etc.), it gets harder to make the case.
I agree with something that Rick said in the interview about what happens when people move in and start using a green building. I believe that human behaviour is the greatest challenge of sustainability. We can achieve LEED Platinum or even the Living Building Challenge in our designs, but it doesn't matter if the building occupants don't understand how it works and how their actions are intertwined with the building and its systems. That's the missing link: we have to connect people to their environment, both built and natural. And that requires thinking beyond credits and points.