Because some nodes were planned to be located on the far side of the Moon, NASA would have contributed a communications relay satellite to the project.
[1] Individual nodes launched by different space agencies could have carried additional, unique experiments to study local or global lunar science.
Such experiments might include atmospheric and dust instruments, plasma physics investigations, astronomical instruments, electromagnetic profiling of lunar regolith and crust, local geochemistry, and in-situ resource utilization demonstrations.
[1] On July 24, 2008 a meeting of the space agencies of Canada, France, Germany, India, Italy, Japan, the Republic of Korea, the United Kingdom, and the United States was held at NASA's Lunar Science Institute, located at the Ames Research Center.
During the meeting, the representatives of the nine space agencies discussed about the cooperation on ILN and agreed on a statement of intent as a first step in planning.