The official site has 2 that I remember. The Teaser with a Colonial warrior being chased through woods, and the trailer covering the end of the war and the fleets escape.
Edit: read back a bit further and saw the crew vats mention. I remember in Voyagers first season they had a crew member around for a few episodes and then killed him off. A bit more depth than a redshirt, but they then dropped that after the first season and we get stuff like a dead crewmember returning that we have never seen before
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