1.) Traveling to modern Earth.
I assume this is done for budgetary reasons, but it's still a p*sser. It's like being told, "Psych! No 'Star Trek' this week. Just a couple characters you know staring in a bland modern drama."
In ten series and however many movies, filled with time-travel stories, we haven't seen past eras from any planet besides Earth. Show us Medieval Klingons, or Cardassia before the Union. Show us how different Trill cultures handled Joining before the planetary government. Show us how ancient Andorians got around their ice world. Show is digital-age Andorians hacking computers with their antenna or something.
If you absolutely must visit Earth, pick an interesting time period, real or fuctional. How about showing us WWIII or the Eugenics Wars already.
2. PLEASE, for the love of Shatner's most beloved toupee, NO! MORE! PREQUELS!
Okay, with "Trek' now going as far as the 32nd Century, "prequel" is getting to be a relative term. But please, no more series set before TOS. And for the love of Q, no "Adventures of Young Picard" or anything like that.
3. Protagonist is an average human from the U.S.A.
Starfleet is supposed to be comprised of thousands of species. Humanity supposedly has colonies all over the Alpha Quadrant, not to mention that Earth isn't just the U.S.
In the past, American TV was limited by budget and available actors. But if modern streaming shows can bring on staring actors from "Harry Potter" and "Crouching Tiger Hidden Dragon," it shouldn't be hard to get a smaller-scale actor from Britain or China to star in a "Star Trek" series. If the actor must be an American, you can still have the character be from the Mars colony, or a space station or something.
And there's no reason the protagonist must be Human. If audiences can accept a protagonist who's a Hobbit, Gelfing, or Time Lord, they can surely handle a Betazoid, Andorian or Trill in the lead. "Star Trek: Prodigy" was the first "Star Trek" series to have an alien as it's lead, and it worked fine.
If the lead character of the "Starfleet Academy" show is an average human from Wisconsin, I'm going to groan hard.
4. Another backstory involving Wolf 359
When DS9 tied Sisko's backstory into Wolf 359, it was clever. But since then, it's been overused. It's not in Seven of Nine's backstory, but every other human drone Voyager encountered seemed to have been assimilated at Wolf 3359. The game "Star Trek: Borg" used Wolf 359 as the player's backstory. "Picard" used it for Captain Stickass's stickass backstory.
There were certainly more Borg encounters than Wolf 359. For comparison, how many people today who've had experiences with terrorism are specifically 9/11 survivors? Give Wolf 359 a rest.