Star Trek: Picard - 6 Ups & 2 Downs From 'Broken Pieces'

3. Seven

Seven of Nine arrived early on in the show and completed one, self-contained, character arc relating to her time between now and the end of Star Trek: Voyager. Her time with the Fenris Rangers, the loss of Icheb, and her quest to avenge his death. It felt finished but it didn't feel like enough.

It's not a total shock to get her back for the final few episodes, even if the decision to have her swing in to rescue Elnor (after he'd just rubbed his magic space penny) felt a little jarring. From there though, her reluctance to reactivate the Borg as she might not be able to give up that sort of power was a great moment and one that the show would be foolish to not revisit.