Just like with Kyp Durron in the Sun Crusher books, Rey's storyline appears to be using Luke Skywalker mostly as a prop to showcase how Kyp/Rey is "even MOAR powerful than Luke!" Obsession with power made sense for Darth Sidious the megalomaniac Sith (not that it did him much good in the end) and it made him do interesting things that furthered the story; but in a film franchise instead of a character in a film franchise, that obsession becomes rather unattractive. (And of course they already did the Sun Crusher equivalent in The Force Awakens with their little long-range Death Star successor.)
I'm willing to consider this new DisneyWars movie a Star Wars fan-fiction movie, but I won't dignify it with the label of Episode VIII. Whatever else George Lucas was as a writer and director, at least when it came to Star Wars he was never derivative. Lucas's Episode VIII might have had bad casting and bad dialogue; but it would have a good story and interesting ideas, and probably would have introduced you to new corners of a vast and exotic conceptual universe. The Last Jedi is just going to be a rehash of ideas that George Lucas already made at least one movie about.
I'll pass on this one.
If I esteem mankind to be in error, shall I bear them down? No. I will lift them up, and in their own way too, if I cannot persuade them my way is better; and I will not seek to compel any man to believe as I do, only by the force of reasoning, for truth will cut its own way.
"Thou shalt love thy wife with all thy heart, and shalt cleave unto her and none else."