From the premise to the setting and the characters, Moonhaven looked to me at first a bit ridiculous. I gave it a chance, though, and I began to like it. Very much. Acting and writing are decent, production values high. Sometimes the music is outstanding. The atmosphere and details (i.e. In language and thinking) were very captivating for me.
Don't let yourselves be deceived by the looks and behaviors of the mooners. It is only similiar to flower power and the likes. But it is a very different view of common life, and in this future the insights to this life is considered as the final salvation of earth, since the future teachers of humankind (and a mysterious AI) are nurtured there, far away from any influence our violent, bubbling world could have on them.
That seems to be a very realistic approach to what is needed four our own salvation. It is a different perspective, maybe not as radical as here, or, maybe even more radical. However, it is inevitable that we soon will need salvation if our own history shall not turn out like that in this show.
Of course, the show is not perfect. There are a few cliches (evil people want to take power over this paradise) and some idlings, and at some rare points you may not fully know what's going on. But the biggest flaw is that this season ends just after 6 episodes...luckily, season 2 is confirmed.
I give it 8 points, which means "very good". It is worth watching and thoughtful, especially in our time, which grows increasingly egocentric and narcissistic.