If I see a single Duros in RoS (I hate that it has the same initials as Revenge of the Sith), I'm calling him Shriv.
Hold up... Now that I think about it, what if RoS and RotS is intentional? I mean, think about it; this is the third movie in a fairly hated trilogy featuring an incredibly powerful Jedi who lived on a desert planet with no father, had to work an unconvential occupation, dreamed of traveling to space yet had something holding them back, have insane skills with piloting, understand droidspeak, were partially corrupted by the Dark Side, and now have the chance of becoming a villain.
What if these similarities aren't lazy writing or signs of relationships? What if, instead, this trilogy, specifically Rey, was not even parallel to Luke, but instead Anakin?
Regardless, "We just don't know."