Yeah, Rey's got too much talent not to have a pedigree. Once the fanboys get their hands on that visions sequence with a pause button, I'm sure the theories will proliferate.
The most fun thing I've read thus far is that Supreme Leader Snoke, who looks to be centuries old, is really Darth Plagueis - the Sith Lord who learned to create life and "cheat death". (In III, Darth Sidious says he was killed by his apprentice, but he doesn't explain how to kill a wizard who can cheat death.) The Yoda-ish parallel to this character would be Maz Kanata, who says she's old enough to have seen evil in forms that precede the Sith. And Kylo Ren is a one-man cult of Darth Vader, who himself turned to the Dark Side in search of the secrets that only Darth Plagueis discovered (i.e., the "work" Kylo Ren vows to finish?)
But that was part of the magic of the original Star Wars - there was a good deal of enigma and mystery around that first film that has been forgotten in the wake of sequels and prequels (e.g., did Darth Vader kill Obi-Wan or did Obi-Wan magically transport himself somewhere?) I remember that the most popular t-shirt in my third grade classroom (1978) exclaimed "Darth Vader lives!" and yet, we lived in a world without obligatory sequels and franchising. I think J.J. Abrams tried to add a bit of that anticipation back into the series (although I will stop short of opining on the efficacy of his efforts).
Either way, the saga is all in Rian Johnson's hands now (as writer of both VIII and IX). I think we need to convince Adam to take his buddy out for a drink (or four) to get the scoop.