I’ll put this here because it deals with pretty spoiler-y TLJ stuff, but it’s got quite a bit to do with TFA as well. It looks like Pablo Hidalgo went into a little more detail about what’s been carried over from George’s original ST outline. Link:
https://www.starwarsnewsnet.com/2018/01/pablo-hidalgo-sheds-more-light-on-george-lucass-influence-on-the-sequel-trilogy.html

If this is to be believed, it seems like a lot of the Rey/Kylo/Han/Luke plot points actually come from George. Han’s death at the hands of his son, Luke’s self-imposed exile after that son’s fall, Rey (then still called Kira) having to snap Luke out of his funk . . . a lot of the DNA from Lucas’s ST is still there, just shuffled around a bit.