Rey’s natural inclination towards the darkside and its Ramifications on her character and the plot need to be adressed. I always thought it would be interesting if we found out that she killed her parents the same way she “killed” chewie, maybe she was born with the darkside and her parents hated her for it, they decide to sell her to unkarr and leave the planet but in her rage she force electrocutes the ship, she becomes so traumatised that she locks those memories away, in TROS we see her true nature unravel as the film progresses until we reach the climax where she must make the ultimate choice.