Humans being the new kids on the block with inferior technology is a pretty common thing. Babylon 5 had humans buy, trade, and negotiate for most of their tech and are barely more advanced than the average small independent world at the start of the show. Farscape had Earth as a backwater, uncontacted, pre-interstellar world and made humans unusually frail with poor eyesight compared to the other species. Even in Trek, humans are physiologically inferior to most everyone and ENT depicted our tech as being far behind everyone else.
The real advantage humanity is consistently depicted as having, regardless of setting, franchise, or even sci-fi vs fantasy, is that we develop new technology faster than just about anyone else. In sci-fi settings, we'll go from barely getting to Mars to colonizing the entire Orion Arm in a couple decades. In fantasy settings, we'll be first to develop firearms and rudimentary industrialization.
There is only one tiny way this could be better - in the original intro, the nebula parts just ahead of Voyager's prow thanks to the navigational deflector. Replicate that one little bit and it will be perfect.
"The Cage" also technically isn't part of continuity while "The Menagerie" definitely is. Also helps to smooth out some other stuff, like Pike making sexist comments in "The Cage"; that isn't part of "The Menagerie" so it didn't happen in continuity.
The TNG writers held off on writing BOBW2 at least partially because Patrick Stewart was renegotiating his contract and they needed to know if he was staying on. I doubt that's a concern with SNW. The writers strike could be a problem, though.
Uhura, Chapel, and M'Benga were supporting characters in TOS at best, and were horribly underutilized the first time around. Spock was a main, but one main out of three doesn't feel like much. Kirk makes it two of three mains.
I think the main problem with Kirk, though, is that he kind of distracts from the regulars. Making him a once-a-season character, like Q in TNG, would probably work better than his three appearances during this one season.
You can also use the episodes they liked to recommend other Trek shows. Someone that likes the zany episodes would probably like TOS or VOY, for example.
I figured they were more diverse before they started conquering other species. Military service seems to be pretty strongly associated with the nobility. My guess is that when they got some other worlds and species under their control Klingons as a whole became quasi-nobility and other species started filling menial jobs. This probably came to a head around the time of ENT. Some jobs, like lawyers and scientists, are probably restricted to Klingons for security reasons, but not as well respected since they're not traditional professions for nobles.
Really depends on the site, the time of year, and the specific topic. The Trek subreddit, for instance, tended to be pro-DSC when a season was airing and anti-DSC between seasons. Even here, that recent thread on the DSC Klingon redesign was very in favor of DSC.
Nowadays 'maiden' can just mean 'young woman'.