Rey being very force sensitive, coming from a desert planet that is much like Tatooine, dressing roughly to the female of equivalent of Luke, being an orphan, etc... It's all a Red Herring. Carrie Fisher recently let slip out that her character's brother (Luke) was too involved in "mystical jedi stuff to have a girlfriend". This confirms that Luke never had a relationship and by extension a child, and since Rey is not the child of Han and Leia, it leaves only one possibility: She, like Snoke, are completely new characters.
In the new EU, Jakku is quite an interesting place. Sidious went there searching for something ancient buried there shortly after he became Chancellor, and found an orphan boy strong in the force and made him an admiral in the Empire who would later on set the foundation for the First Order and die sometime before TFA. Sidious told the boy that Jakku was once a very important place in the Galaxy, and that it would be again.
I could go on and on, but what I am trying to point out is that VIII is going to surprise us.
Nothing to see here, move along.