Then complain about the writing and leave the character alone. It's possible to have a story in which decent characters aren't used to their fullest potential, or are handled badly. If people's main problem is with the story, then Rey shouldn't be singled out the way she is. There's more to the writing than just her.
Uh...the word is 'prodigy'; 'progeny' is different...
Besides, the struggle is only important when the end goal of the struggle is the end goal of the story. I don't think the point of this story is to make Rey a Jedi master or even a great warrior. And in that case, there'd be no real value in making her go through all the cliche'd training montages and battles for honor...apart from satisfying the expectations of people who don't want to see anything else.
I think the content of the struggles she IS experiencing, rather than the ones people THINK she should be experiencing, are going to prepare her for her destiny. And if they don't, THEN we can judge.
I...really don't think her parents are that much of a big deal in the grand scheme of things?? I mean, if that's ALL the writers are going to be inconsistent about, I'll be able to forgive it. They were important back when their existence was going to prevent Rey from leaving her home and joining the story; at the moment, they're going to have to give me a new reason to care about them, 'cause I don't currently have one. =/
That's just a preference. It doesn't mean she's a bad character, because it's not under her control. It's like saying a philanthropist would be more likeable if they'd had to earn the riches that they give away instead of inheriting them. It's unfair, to say the least. =_0