I totally forgot about Latent Image. That episode is one of the best pieces of the show. The mystery and the pay off are really good and easily en par with the family episode. It's actually a bit of a shame that it also highlights one of the weaknesses of Voyager in an indirect way.
Imagine if the woman that "went missing" in that episode was a recurring side character that we'd have seen here and there in smaller parts throughout the show before that point. Stuff like that would have severely improved the show. Unfortunately, they never gave us a well-defined crew, it was always just randoms in the background that barely did anything. Had the rest of the crew been a bit more fleshed out, to make us really feel this isn't a bridge crew of like 7 or 8 people that do all the work and a bunch of faceless no-names running in circles in the corridors, that would have been rad.
They actually started doing that in Season 1, there's a lot of regulars, Ensign Durst, Lt Carrey, Ensign Hogan, Crewman Jonas, Ensign Kaplan, even Seska begin with that role.
And they proceed to kill off almost every one of them within the first season:
Durst: Gets his face ripped off for a Vidian doctor and is assumed to have been harvested for organs
Hogan: Died to a cave monster when they were stranded on that M planet by the Kazons
Jonas: Betrays crew to Kazons, humiliated by being killed by Nelix.
Kaplan: Dies in the first, but the certainly not the last, of Chakotay's shuttle crash.
Seska: Betrays crew, died to sabotaged phaser emitters.
Carrey: I saved the worst one last, Carrey loses his shot at Chief engineer to a progressive promotion policy, again a white man passed for a job by a foreign woman. I kid, I kid, but then he proceeds to vanish for 6 seasons, only to be brought back in the 7th season, when Voyager is almost home, to be made an example and killed in that episode. Poor guy.
The only other regulars we see is the Extra Ayala which appears every where in all sort of costumes and hardly ever get a speaking line. But usually if they wanted some kind of Star Fleet security extra they'd go for him. Plus he's one of the few extra who gets named.
Baxter shows up twice, one to get talked down to by the doctor and one more time to deliver some lines in the Twisted episode but then vanishes to never show up again.
There's a few more background extra that are named, like Culther and Fitzpatrick but that's about it.
Really wasted potential.
And then you have Vorik who after get turned down by his boss, then gets beat up by her, and gets to hang around and is assumed to made it home despite the luxury of having a lot of spoken lines in engineering. I think they realized they killed off everybody in engineering and they needed somebody around to deliver some of these lines.
Edit: Bonus, I was reading up Vorik, he's played by the son of producer Jeri Taylor, well no fucking wonder he got more respect than every other extras,