I would prefer Rey, Snoke, Finn, Poe, etc. unrelated to any known character. The galaxy is wide, bring fresh blood.
That’s pretty reasonable
I don’t understand the buzz around Rey’s parents: I really don’t give a shit about her parents. Have we met Obi-Wan’s parents ? Yoda’s ? Han’s ? Chewie’s ?
The difference is that these characters weren’t abandoned on a desert planet as a child (or even older if had her mind wiped) and above all that’s why people want to know who they are. I think people want to know why they abandoned her and why they never came back. And Rey as a character deserves to know who they are. All of her suffering on Jakku would have been for nothing if she doesn’t find out who her parents are.