They had to be sure it would survive the cosmic radiation, so they picked a mil spec rad hardened microprocessor (AKA Old). The Lava tubes are something from the moon's past, and are simple to seal up. The will provide a lot of space, and be Safe from small meteoroids.
The best way to work (for people) is to have a recovery robot to send to pick up the damaged unit, and bring it to a central facility. The person can repair and upgrade, then send it back to the recovery Robot; to be returned to it's test site. That way, it can go back to work quickly.
The people run the central facility, and figure extraction of materials; and direct the Robot exploration. The people provide the thought required to push things forward.
Flexibility is Not a robot's kettle of fish, so the people will fill this gap. The A.I. decision level needed for 'robocop' is why they made him into a cyborg.
Still need some programming to get there. The processor speed is beginning to get there, it was a processing speed problem on prosthetic limbs a decade ago. That is something I would like to build, especially with electrodes to allow the user to move the limb by thinking....
:)>
RE: NASA is back on track to colonize the moon, by destroying some grains of moon material brought back by Apollo 17.