While the Skywalker family was torn apart by Anakin’s seduction by the dark side, Erso must overcome her father Galen Erso’s (Mads Mikkelsen) part in the creation of the Death Star.
So, even if Erso, or others, do not survive their mission, we may not have heard the last of them.
The next installment in the series of Star Wars anthology films will be a prequel featuring Han Solo, likely set around the same time (probably a bit earlier) as Rogue One.
It is still too early to know how fans will react to Jyn and whether she will develop the same iconic status as Luke, Leia, and Han.