Orion’s capacity for six crew members should be taken full advantage of. A six person crew lessens the risk of third-wheeling occurring, making the psychological aspect of the journey less stressful. An equally gender-divided crew of diverse backgrounds and personalities gives the mission more perspective and more ideas can be brought to the table, especially in emergency situations. It will also provide good representation for the media. An ideal breakdown of crew roles includes a pilot, commander, engineer, soil scientist, atmospheric scientist, and a calculator. The soil and atmospheric scientists are vital to perform any environmental tests on-site. The engineer would supervise the set-up of permanent moon equipment. The calculator will solve any on-the-spot space calculations. Everyone should be capable of thinking on-the-fly innovatively. They all need to be in peak physical condition for the taxing spacewalks and moving of equipment.
One machine that would be essential to leave on the moon's surface to aid future lunar-landings would be one that can both break down the soil into its chemical components and then use those components to build new structures. If the moon's soil is composed of roughly 43% oxygen, a machine could take in the soil and separate the oxygen from other elements, storing it for future use for astronauts. For the building aspect, the machine could then use leftover elements like silicon, aluminum, iron, etc., to 3-D print buildings. While there might not be danger of supplies being blown away or covered like they could be on Mars, structures will be essential to protecting supplies from solar flares and radiation exposure. The moon will surely become a supply drop point between Earth and Mars, so it's important to eliminate wear-and-tear from radiation as much as possible. A similar machine could do these tasks while drilling for ice.