Social commentary was, always has been, and (hopefully) will forever be a fundamental part of Star Trek!
That being said: It was at it's best when it wasn't the
point of the episodes, but rather the
windowdressing. Like having a black female in a position of power on the bridge: It wasn't part of any conflicts. There wasn't much ado about it. It wasn't necessary for the plots of the episodes, nor was it specifically adresses.
She was just there.
i don't want preachy plots. I want sci-fi action adventures. Where the social commentary is
subtle in the background. Just by having a black, female lead, the show is already making a statement. Even if the specific plots of the episodes aren't.
Discovery is not going to keep finding savage allegory races like Picard and Kirk did.
Just focussing on this little sentence of your post: I hope Discovery doesn't do that. It was a big, important part of previous Trek. But it's not contemporary any more. They should keep it to a minimum.
If they do a allegory plots (and they definitely should!), they should do them with
the major races, so that whatever happens has
consequences and
weight to it.
What about a "Brexit"-movement inside the Federation? What if Tellarites or Andorians want to leave the Federation? In a plot that is clearly set in motion by Romulan intrigants - but that has gained such traction it can't be ignored?
Considering how populism and nationalism are rising in the USA and Western Europe would be a good episode.
The same leader can talk against 'universalisation' of the economy. All those aliens coming to our colony to take our jobs.
Indeed. I don't think Discovery shoud do a 1:1 version of a space Trump. That's way too much on the nose, and Trump himself is a very specific problem that is unique and only possible in the US. But the basic motivations and reasons behind his rise, and the rise of authoritarians all over the free world, is a valid and interesting point to be examined in fiction.
Considering current political developments in the US, I'd say it's safe to assume that this is the exact right moment for TV to talk about minorities.
Preach it girl!
Both by
not talking about it - simply having a female minority lead, that is never questioned in her qualifications based on gender or emphasized as "different" in any way. AND by having specifically tailored plots about how people (humans and aliens) react in encounters with beings that are "different" to them - a plot point almost laughable fitting for a science fiction show about encounters with aliens.