Shattered gives us an interesting concept--the ship fractured into various parts of Voyager's history by a temporal accident--but it doesn't delve tremendously deeply into any of the problems setting things right might bring up.
Chakotay and Janeway have the obligatory "what-happens-when-we-restore-the-timeline" talk, and Janeway briefly considers, then rejects, the idea of altering the timeline so that her crew is never stranded in the Delta Quadrant--but we never see any of the crew who might be negatively affected by restoring the timeline. We see Torres-as-Maquis, Kim-as-rookie, and Seven-as-drone, but we don't see some of Voyager's casualties. Would Lyndsey Ballard have wanted to restore the timeline in which she was killed by Hirogen hunters? How about Lieutenant Hogan, eaten by a giant worm when the Kazon strand Voyager on a low-tech world? Ensign Kaplan, killed in a shuttle crash when Chakotay encountered unassimilated Borg?
Tasha Yar, in ST:TNG's "Yesterday's Enterprise", faced this question. No one in this episode does.
Chakotay and Janeway have the obligatory "what-happens-when-we-restore-the-timeline" talk, and Janeway briefly considers, then rejects, the idea of altering the timeline so that her crew is never stranded in the Delta Quadrant--but we never see any of the crew who might be negatively affected by restoring the timeline. We see Torres-as-Maquis, Kim-as-rookie, and Seven-as-drone, but we don't see some of Voyager's casualties. Would Lyndsey Ballard have wanted to restore the timeline in which she was killed by Hirogen hunters? How about Lieutenant Hogan, eaten by a giant worm when the Kazon strand Voyager on a low-tech world? Ensign Kaplan, killed in a shuttle crash when Chakotay encountered unassimilated Borg?
Tasha Yar, in ST:TNG's "Yesterday's Enterprise", faced this question. No one in this episode does.