People should not return to the Moon until they can stay there for a significant amount of time and accomplish things. For this reason, the Lunar mission should be based on sending a nuclear powered, tunneling robot to the Moon. This would change the entire equation.
To start with, this is not extraordinary technology. A spaceship, not just a lander, would land inside a crater, or next to a cliff face. The robot would disembark, and start to methodically mine a horizontal tunnel, at intervals inserting reinforcing rod into the ceiling, as is done in modern mines on Earth.
It does not have to be fast, just an inch or two a day of rock, that is pulverized, then sent by conveyor belt away from the tunnel. Since the spaceship that brought the tunneling robot is not returning to Earth, it can later be cannibalized to provide ceiling, flooring, walls, and pressure doors for the tunnel, after spraying sealant on the inside against micro fissures, and expanding foam insulation.
By having a completed and tested tunnel waiting for astronauts, they do not have to bring a habitat with them, so can instead bring more supplies and equipment. Inside the tunnel they will be out of the cosmic and enhanced radiation, vacuum, extremes of heat and cold, and away from the very abrasive Lunar dust. Plus they will have plenty of space to work in.
The robot can continue to tunnel, giving them more space, and eventually even dig vertical shafts that can be used for water cisterns and fermentation tanks. While the astronauts are there, the robot’s nuclear reactor provides abundant power for their use. Likewise, it could power a high temperature furnace, very useful for many experiments.
Lastly, a tunneling robot could also be of great use in exploiting underground water ice.
In the final analysis, doing it this way could turn Lunar missions from just a week or two, to several months.
And for those cold 14 day long nights.