Just had the thought, will there be a Frenni Fazclaire 3? FNAF players alone know there are a lot of animatronics. Maybe instead of a plot like the first two, it could be more dating sim, working as a night guard trying to settle in, get scared, learn about the job in detail, then focus on relationships. Because these protagonists have already done the hard work of not dieing and saving the day. Maybe a chill game, while managing relations and work could be a thing.
Or a murder mystery, at humble third location, instead of the animatronics being suspects, they're the only ones not suspicious. Find the man or woman guilty of offing the manager, while the big wigs keeps the cops and secret societies at bay.