Star Trek only ever had ONE premise, and stuck with it
The main premise of Star Trek, from the very beginning and the whole "Wagon Train to the Stars", was to explore strange new worlds, to seek out new life and new civilisations, and to go boldly where no-one had gone before, and it worked well.
It worked well for TNG as well, with a new generation and a better ship.
Then Paramount executives saw J. Michael Straczynski's Babylon 5 bible (and no doubt copied it) when he pitched it to them, rejected it, but then got greedy and used many ideas (and names) from the classic Babylon 5 for their own show, DS9. And guess what? With the benefit of hindsight, DS9 turned out to be the best Trek show ever, even though it was still riding on the coattails of Babylon 5.
Then Paramount ran out of ideas and just modified the original recipe for Voyager, while playing it safe, even though the premise was squandered. But that's fine with me, more of the same winning TNG formula, thanks!
And finally, Enterprise, a prequel, because Star Wars worked so well with their prequels.
So you see, Star Trek has basically stuck with its winning formula, even rehashing it for the Abrams shit onwards in 2009. They just can't think of original ideas anymore.