I'd say they should focus more on asteroids, unless they can justify a continued presence on the Mun, er, Moon. As much as I'd like to see a Base on the Moon, and people going beyond LEO, I'm not sure how to justify it, especially to start with. These days, I just don't know what people can do that robots can't, with remote human guidance. The project I hear is best suited for the Moon is a Far Side radio telescope, shielded from Earth's noise by the bulk of the Moon. Again, I don't see why that can't be built by robots, from lunar or 'roid mined materials. Technically challenging, yes, and requiring a Dextre-ous robot, but that's what would be required to assist and support humans in the unforgiving environments of space, the Moon, and Mars. It would make more sense to create stockpiles of materials (metals and water mined from asteroids) in orbit, whether it's around the Moon, L1, or even LEO. If it's visible from Earth, it would be more inspiring to the general population. It should be easier to mine 'roids (once we anchor the machinery) because there is no appreciable gravity well to lift products out of. Once we have materials, we can use them to create Moonbases and Mars vehicles, and it would require much less upmass to support a human presence. If we can find decent quantities of platinum and rare earths to ship down, it would give high-tech devices on Earth a boost in capability and affordability. The only reason I see for people on the Moon is to perfect life-support and other technologies with an eye to establishing colonies farther out in the solar system. The purpose for colonies is so that all of humanity's eggs are not in one basket. Having people in harsh environments will drive innovation. Sorry about the rambling, I tried to minimize that