The reason I don't think they ever make these kind of series is because they stray too far from the Trek formula, and consequently become a financial gamble.
Even people who don't know much about Trek (and they're the target audience to hook in), probably know it's set on a ship in space. That's your basics. That's what 95% of fans want & 95% of everyone else expect. Sure, 'Federation Marshals' to use an example may well appeal to some people but if anything shows like that, or ones set in the Academy, dilute the premise & shrink your target audience; why would they pump millions into a series they don't know people will like, or expect?
That's why, IMO, you'll never see a Trek series that's not a) set in space and b) set on a ship or a space station.
The trek formulaic tendencies is what killed the show.
So I hope their intelligent enough to understand that the formula is the primary problem.
We live in very different times from the mid 80s.
Hopefully if there intelligent there gonna stick to upper tier format that has come about with the use of dvds.
10 episodes a year, with one year at a time story arcs.
Story arcs are of course a necessity in this format type.
As episodic television doesnt really work when there is almost a year gap in seasons. People have to be engage in a plot for 12 months of the year waiting to know what happens next.
Also make no mistake in an age when game of thrones is king geekyness is good. The key is having character devlopment so people really cares what happens next.
Star trek has the goods and people wanna see it. Even if they released an enterprise quality show, they would make money at this point. The key is character development(aka hiring good actors) The worst thing I think they can do is spend to much time thinking about the ship, the time period, the technology etc, if the writing is good, the time period etc should be entirely irrelevant. Not surprising enterprises best episodes were when they werent trying to focus on the time period or ship.
With a modern format production costs are easy to control. Small number of episodes with no set cast. And a boatload of people willing to do cheap guest star roles.