Since the show's been canceled, it's difficult to fully predict what we might have seen had it been renewed for Season 4.
Season 3 really leaned into the darker themes of the show, with the recurring tagline and theme being "survival" as its characters find themselves trapped within Final Space itself. Given that most characters survived the last season, we might expect the next one to play off these themes with more empowered characters, using the knowledge they now have of Final Space and the universe in order to avenge any fallen heroes and go after Invictus.
The Season 3 finale left plenty of room for this story to continue in a number of potential directions. If another network or streamer saves the series, the creative team will have to pick up where they left off and contend with the ramifications of Season 3. If that doesn't happen? Well, we're all stuck with a largely unsatisfying ending.
