She would theoretically be a seasoned vet by the events of Rangers, so that would make her perfect as a mentor-type figure to any new supporting characters on the show.
While this new rumor should be taken with a grain of salt at this point, bringing Hera into Rangers of the New Republic would make a lot of sense.
Given her past affiliation with the Rebel Alliance, it stands to reason she would join up with the New Republic after the fall of the Galactic Empire.
Plus, it would give fans the chance to learn what becomes of Syndulla’s potentially Force-sensitive son.