A good effort by the London Organising Committee of the Olympics and Paralympic Games (LOCOG) to mandate that the only permanent sports facilities that would be built were those for which there was a demonstrated long-term need. Other facilities are supposed to be shifted from Olympic requirements to community use requirements. This step not only provide the necessary venues for the Olympic Games but also frees up the resources (eg. construction materials and land) after the games. The community also get to enjoy the scaled-down games facilities after the games.
Does that open up the possibility that smaller countries such as Singapore could host the FIFA World Cup or Summer Olympics Games?
Check out the design of 3 such venues which allowed such approach to be adopted at this link.
Image source: Wikipedia.