Thinking on the material in this section I wonder if any other shows as well as TOS ever bothered with this much fleshing out of a show's background. In particular I'm thinking of Lost In Space and Voyage To The Bottom Of The Sea--I really wonder how much thought was put into the science and technology of those shows and whether detailed noted were kept.
Nope. ST was pretty rare in that regard. Irwin Allen shows were put together in a much more slapdash manner. Heck, after the pilot of
Lost in Space, they added a lower deck to the
Jupiter 2 even though it couldn't possibly fit within the proportions of the ship model. And then two years later, they added a
third deck below it! As for science, get outta town. It was completely random and nonsensical. The pilot of LiS was apparently based on the idea that the crew would travel in hibernation for years at sublight speeds, but when Dr. Smith was added in the reshoots, they tossed in a hyperdrive to justify his ability to stow away without a cryogenic chamber of his own.
Another interesting item of note. It's widely believed that the period setting for Star Trek wasn't more firmly established until TMP. And yet sprinkled throughout TMoST are repeated references to the 23rd century bu both Whitfield and Roddenberry. After the divergent refrences in the first season they later seem to have settled more firmly on the 23rd century.
That seems to have been roughly in place by "Metamorphosis," given that Cochrane had vanished at age 85 a century and a half before the episode. If the series had been only 200 years in the future, that would've made Cochrane a contemporary of the TV audience, which seems most unlikely. So the timing does suggest a 23rd-century setting, although it's never explicitly stated onscreen until the movies.
The earliest explicit mention of a 23rd-century setting in any
Star Trek text, as far as I know, is in James Blish's "Space Seed" adaptation in
Star Trek 2, published in February 1968, seven months before TMoST.