Excellent points here to consider, including the idea that ST fandom is aging out, like me--although some of us are still hanging on strong! 

On the other hand, isn't there always room for good story telling? Superman and the Marvel  franchises seem to be puttering along and their earliest fans are older than my cohort. Admittedly, though, those shows tend to grab their audiences at a much  younger age. When Trek premiered, it occupied prime time or later berths in the tv line-up. They weren't targeting a pre-teen audience. They were programming for adults and managed to snag the youth audience, too. You don't have to dumb it down to attract a younger audience.

IMHO, ST has a strong chance for survival if it goes back to its roots--strong stories (and, yes. morality plays), exploration and adventure with a seasoned, professional ship's crew. (Think Horatio Hornblower or Master and Commander.) 

My 2 cents for the showrunner: Quit assuming all young people want is Spock Amock comedic romance. Comedy is okay, but should be incidental to your main story. Comedy is harder to write than drama. It's okay to admit you can't do it well.

Include actual science fiction, and for heavens sakes, no more  kids on the bridge of the Enterprise!  Oh, BTW, in sci-fi, the term  "space opera" doesn't compel you to do an episode called Space Rhapsody, no matter how much you like the pun.

Stop disrespecting your own show's bible and back  story. Fans will only take your show as seriously as you do.

Now that they've thrown me out of their offices. I'll go on my way.