I think a big reason VOYAGER is not better than it should be was the suits at UPN. I really enjoy the show, but network interference is pretty apparent throughout its run.
Frankly, it's a credit to the actors and the writers (yes, I am giving them some praise because they did write some really good material at times) that it is not a bad show.
(To elaborate about the writers: there were some really great concepts and stories done. The problem was inconsistency and lack of arcs. Of all the shows in the franchise, DS9 included, VOYAGER was the one that most screamed for arcs. A single Starfleet ship alone in a completely unknown quadrant... there should have been a LOT more arcs. We did get a few character arcs... The Doctor and Seven's respective internal journeys, Tom and B'Elanna... but there should have been more, especially with a ship of only 150 people who aren't going anywhere else.
And many of their concepts were fantastic... Vidiians, "THE THAW", Tuvix, the Krenim weapon ship, Vaadwaur, "BLINK OF AN EYE", Hirogen, "MEMORIAL", and many more. Even some of their worst episodes have a great concept rooted in it: Chaotic Space ("THE FIGHT"), the Taresians ("FAVORITE SON"), a sentient twisting phenomenon ("TWISTED"), breaking the warp 10 barrier ("THRESHOLD"). I can't put the full blame on the writers because they clearly have shown they had the ability to give us good material.)