Why didn't the writers never mention it again? Specially in the series finale. Their help could have replaced Admiral Janeway's, with the time devoted to the "future" instead being used for closure after they arrived on Earth (meeting loved ones, maquis trial, and so on)
Imagine that instead of Batmobile Voyager, we would get Voyager and a fleet of "Free Borg" ships going against the Colective. Could have been epic...
Imagine that instead of Batmobile Voyager, we would get Voyager and a fleet of "Free Borg" ships going against the Colective. Could have been epic...