Alien probes and gods seem to be where Roddenberry's head was in the 70s.
Well, not exclusively, since he was pursuing
a lot of ideas in the '70s. In addition to
Genesis II and
Questor (which was basically
Assignment: Earth take 3), he also made the supernatural-detective pilot
Spectre and scripted and produced Roger Vadim's dark sex comedy
Pretty Maids All in a Row, and had several other pilot ideas in development, including an SF cop premise called
The Tribunes, which was vaguely similar in concept to last year's FOX series
APB in that it involved a special unit of the police using cutting-edge technology to improve their methods. (At least, David Gerrold mentioned that one in
The World of Star Trek, though it never seems to come up in any other discussions of Roddenberry's '70s work.) There was also that
Starship proposal that was the source of the "ringship" artwork seen in TMP, and that somehow involved the sentient-starship idea that ended up as a component of
Andromeda. Plus
Battleground Earth, the alien-invasion premise that was the basis for
Earth: Final Conflict, and an underwater-society pilot called
Magna One -- per my Lincoln Enterprises catalog, "Future Earth, its land civilization stagnated by overpopulation and ecological disaster -- under the oceans, a new breed of water-breathing humans live in perfect harmony with all sea life -- in an incredibly lovely new society."
So you could argue that the '70s were really the peak of Roddenberry's creativity, because he had a ton of promising and varied ideas, even if he was unable to get any of them to series (except
Questor, which he voluntarily abandoned when the network insisted on dumbing it down), and even if the execution didn't always live up to the concepts. It's interesting, though -- most of his pre-ST work was Westerns, cop shows, and contemporary dramas, but pretty much everything he created after ST was science fiction or fantasy, even when he was trying to move beyond ST. Was that because he was trying to build on his established reputation as an SF producer, or was it just that he'd always preferred doing SF but had needed to build his career with more conventional stuff before he could get to the point of doing what he wanted?
By the way, nobody ever talks about the
other story springboards for
Genesis II aside from "Robots Return" and "Poodle Shop," the basis for the second pilot
Planet Earth. Here's how the others are described in the Lincoln Enterprises catalog:
"Company B": "A 'Trojan Horse' suicide squad from the days of the Great Conflict comes out of suspended animation and attacks PAX. They represent the 1995 ideal of a perfect soldier." -- Maybe a bit of this showed up in Q's future-soldier cosplay in "Encounter at Farpoint"? I'd be tempted to compare it to "Space Seed," but it's an obvious story premise for a show about the aftermath of an apocalyptic war to deal directly with the warriors at some point.
"London Express": "A hair raising journey through submerged portions of the North Atlantic subshuttle tube to mysterious London of 2133 AD. Dylan Hunt and Team 21 meet Lyra-A there and the mad monarch King Charles X." -- Lyra-a was Mariette Hartley's character from the pilot. A bit of a thin premise, but clearly an attempt to get some use out of the subshuttle concept.
"The Apartment": "Trapped inside 20th century ruins by a mysterious force field, Dylan Hunt is catapolted [sic] through a time continium [sic] back to 1975 where he can be seen as a 'transparent ghost' by the girl living in her apartment there. A bizaare [sic] love affair with a surprise twist ending." -- Maybe the surprise twist is that he was there to help the girl study for her spelling test? I think one of the unused
Star Trek: Phase II story outlines was a variation on this.
"The Electric Company": "Dylan and his PAX team encounter a place where a strong Priesthood holds a society in bondage through the clever use of electricity. The simple inhabitants see the flashes of light and the amplified voices as the sight and sound of 'God', but Dylan's team ends the dominance of the Priesthood when they come up with still better tricks." -- A pretty standard sci-fi plot done many times before and since in various SF works, including "The Return of the Archons" and "The Apple" in Trek. Anyway, it illustrates why so many SF writers go for post-apocalyptic premises -- because it lets you do what's essentially historical fiction and pass it off as futuristic. It's easier to write about cultures that have regressed to the past than to imagine future innovations. It's also more attainable on a TV budget.