Well said, and one of the things that I don't think I (or much of anyone really) caught on or latched onto, were the occasional hints that a larger power(s) was behind it all. I noticed that element more watching the show a few years back and it helps to understand a lot of the implausibility in certain elements of the show, specifically it's premise. I know that "Black Sun" comments on this, and "Testament Of Arkadia" hints that the Alphans were supposed to be there and it's why the moon was blown out of orbit. To bring Arkadia back to life.
One of the things I LOVED about Space:1999 was the utter mysteriousness of it's universe. In Trek we know Fed Space, Klingon Space, Romulan Space, know the Dominion is this side of the galaxy, the Borg on that side, etc, etc. It all feels too mapped out. In Space:1999 you just have no clue as to where they are, what's around them, etc. And the combination of beautiful spacescapes and eerie music, especially in Season 1 made space seem vast and unknowable. I also loved how, in Season 1, you'd have episodes like "Force Of Life" where some strange life form takes over a guy, we get some horror story, then it just goes on it's way at the end. Just one big spooky mystery.
As for the moon being blown out of orbit, yeah, it was pretty way out back then and I was only seven years old at the time. But I loved it anyway. I loved that the crew could not control the moon and just had to go along with it. "Space Brain" is one of my favorite episodes because of that. I love how they describe the moon as basically a bullet going through this vast entity who's well being was needed by who knows how many worlds.
I loved the near future tech, but often times they were ham strung by it. I always wondered why there were no Hawks on Alpha with the Eagles. The Hawks were fighter craft, so there was either space combat going on, or the potential for it existed to justify the building of Hawks....so it always seemed strange to not have some on the moon. Aside from the moon always being lit in deep space, the other thing that stands out for me is how the moon might as well be asteroid sized considering how nothing ever happens that far away from Moonbase Alpha. In the war of the sexes episode, it never occurs to the aliens to just build their base a thousand miles away from Alpha. Or how whenever a meteor is heading towards the moon, it has to be threatening to Alpha. I know, tv reasons, but still.
Anyway, I hope they do this and can find a way to retain that cool, spooky and mysterious feel of Season 1.