The moon does have resources, but mainly in the form of silicates and some water ice. Heavy metals would seem to be rare there from what I've read, though I'm sure prospectors could perhaps find the remnants of iron meteoroids.
It would be efficient to 'live off the land', that is construct your base out of what is available. Stable craters, local cement, ect. I'm not saying that someone couldn't build a big tower there, but I would think that being a resource miser would be a good habit to get into, even a super advanced society of space-farers