In "Deadlock," the season two episode of Star Trek: Voyager, the original Harry Kim [Garrett Wang] is sucked out of an airlock and replaced by the Harry Kim from the other version of Voyager. Essentially, the original Kim is dead, but is he really? Not according to an idea Wang had about what his character has really been up to since he was forced off of the ship.
In an interview with CinemaBlend, the actor recounted a storyline he imagined that would bring his Kim back but only as a much different character, one that would go head-to-head with Seven of Nine [Jeri Ryan]. "My [imagined] storyline was the Prime Harry that gets sucked in the space is actually beamed aboard a floating Borg sphere that is actually kind of hanging out nearby, and they notice that Voyager is just discarding their youngest officers out of an airlock. And so they beam him aboard, and Borg Kim ends up becoming the secret weapon of the Borg Queen to get Seven of Nine back," Wang said.
Granted, this was for an episode of Voyager, but think about how it could work now, especially since Seven of Nine is now captain of the Enterprise. Even if we don't get a Legacy series, this is a scenario which should definitely be made into a streaming channel movie. To date, none of the original characters from any of the series have been assimilated permanently. So imagine, twenty plus years, after he was killed, Prime Kim returns as an evil version of himself, working on behalf of the Borg Queen, whichever one happens to be in charge at the time.
Seven of Nine and Kim had a good working relationship, and at the end of the series, she saw the entire Voyager crew as her family. So could she face off against a Kim drone and eliminate him, if it came to that? Or would she hope he could be saved as she and Captain Picard were?
This isn't the first idea Wang has had about his character, and quite frankly, Paramount might want to start listening to him as a match-up between Seven of Nine and an assimilated Harry Kim would be a fight well worth seeing. Imagine the drama, the action, and the emotions, especially if Seven of Nine was forced to make the ultimate choice.