Ryan said:
I would not be surprised if you see fan edits of TFA where they edit out a lot of Rey’s parent stuff. I think the Rey’s parent stuff in TFA will feel like a drag on repeated viewings. That’s assuming nothing changes on that in 9.

But knowing she really is “no one” and not a Skywalker/whatever blood relative is one of the strongest ideas of the movie (and RJ takes his time to make that reveal, so in a way it’s quite respectful of the material). By making Rey not-Skywalker, he gives the Saga new horizons (I don’t like the Rey character but this idea is great me-think).