A modern, rational Space 1999 story is Alastair Reynold's Pushing Ice. Instead of the moon and a moon base, it is a huge mining ship and a fast moving asteroid that's inertialess acceleration the crew doesn't notice until it is too late.
SF production design between 1968 and 1990 is simply outstanding. The Eagle lander variations, the space suits, weapons and even uniforms are thoughtful and rich. The problem was the plot, physics and aliens. Keep the aesthetics, basic background story and main characters - replace the plots, paranormal nonsense and bad aliens. The basic Swiss Family Robinson theme is a good one with a great look.