I don't think much needs to be done in this area. There is lots of great information out there already on best practices, and it's difficult to segment it and bring it all into one spot.
I just look at our own site. We operate one of the most energy efficient buildings in the world. We have an online tour of that building, featuring energy and water, green office space, and a whole bunch of different areas. Even trying to figure out how to make that interesting for all those different audiences is difficult enough when it's still all just about a building, and to add conservation, transportation, and all these other things, to me, can't be brought into one spot.