Star Wars warm take
I want Rey to be powerful despite her filthy junk trader parents because I want to be a considerate partner despite the way my dad treated relationships, or a good dog parent despite the way he hit them, or in control of my anger despite my step dad smacking me around. I want her to be greater than the sum of her background because I have to believe I can be greater than the sum of mine.
Star Wars warm take
Her parentage will be a HUGE deal, though. Too much money to be made off a big reveal. Ah well. Create the stories you want to see in the world, and all that.