Back to Trek:
VOY Season 1's first handful of episodes were the strongest freshman offerings of any Trek series since TOS and that was more than 28 years earlier. VOY was - thus far - one of only two Trek series that started stronger than it ended.
I agree. Most series had some difficulty hitting their stride, but VOY started out quite strongly, even if they made some mistakes (there were some weak episodes, and perhaps too little in the way of crew conflict). But when looking at Season 1, you can see they really tried to do something new. They may have failed in that, but at least, in the first season they tried, as contrasted to the feel I got from later seasons - sticking to what they knew worked.
My own contribution - and I don't know whether this is controversial or not - is that I think that even though I think DS9 was the strongest series, it veered too much into 'soap opera' territory sometimes in its later seasons. For example, I could have done without the Ezri/Bashir/Worf love triangle (for lack of a better term), and while I didn't mind the ventures into the love lives of our main characters, I thought there sometimes was a bit too much of it. I don't watch Star Trek for that stuff, in the end.