Lagrange needs armour. Solar panels can be sapphired at the edges for some help. Vacuum rolling metal leads to solar concentrators and thermoelectric devices. So think power on the Moon (with wipers) and at Lagrange. The heated object can be shielded not the bimetal concentrators. Better than ALD aluminum oxide coatings should be there. Self-RADAR of some sort should be there for NORAD but it might just be enough time to edge-move panels. Two crew saves supplies. A sensor networks will be connected to CIS-Lunar an astronaut able to wake up or attention the two person crew. Maglev means magnets exploding will be a prime danger. I'll pay 10% for ground metals that are hermetic on the way to space. Armor will be mountable or built into the product. I'll give away hermetic seals for an early satellite and UHV before a later one. Sapphire nanotech can potentially be perfected here.