Who else is going to see Rogue One, the next Star Wars movie soon?

[Anomalocaris]

The trailers implies she is a misfit, picked off the street by the rebel alliance and entrusted with stealing the empire's deepest secret on a mission so important the only two good movies of the franchise had depended on it for 39 years.  

She's not just a random misfit, her father constructed the death star weapon...

The notion that being the daughter of a presumably engineer type weapons designer makes her preternaturally good at commando style infiltration and intelligence smash and grab missions seems to be very similar in credibility to that of being a junk collector with mysterious and presumably Jedi related parentage would implicitly make Rey preternaturally awesome in lightsaber fights.