I agree a moon base is the logical next step although probably not on the scale you are talking about. Elon Musk recently talked about a moon base as a pre requisite for his planned trips to Mars:
And as everything else he touches seems to turn to gold, let's hope this (and the mars trips) soon become reality!
That's the exciting thing about systems, they tend to scale up over time.
Thanks for the comment, much love. <3