Moon Bases I don`t know if any one has though of them this way but here goes !!!
have moons with different resources to mine,.....water to help with barren worlds
and maybe populations levels,..energy,other resources to help filter out toxic rdioative
and material to help with building ships faster and or better (ship quality) other things then wat or star bases do!!!!
if it is going to the same planet that the moon rotates then the collector can be on the planet!!! each rotation the extractor can beam so much to the collector for X amount of ratations till set amount has been beam to it!!!
If it is going to other worlds the extractor beams to a collector which in turns beam it to a relay station or collector which in turn beams it to the planet side collector or more relays till it gets to the planet!!! the farther the planet the longer it takes to collect the resources
depending on how rich the moon is,.. how many moon bases you get 1 or 2 maybe 3 if it is real rich in resources the moon miner lands on moon and you improve the square the square tells you which resource is available
of course this ideal may need to be tweake