1. Knights of Ren completely missing from TLJ as well as missing from Luke's recollection of Ben's betrayal. TFA really built up the importance of Ben getting force sensitives to join him and destroying the temple.
2. In TFA, Abrams teases that Kylo Ren knew who Rey was when he says, "What girl!" and left a cliff hanger when Maz asks Han Solo, "Who is the girl?" It is also obviously implied that Maz knew who Rey was during the whole Skywalker lightsaber scene when she says, “That lightsaber was Luke’s and his father’s before him, and now it calls to you.”
3. If Rey was a nobody and her parents sold her for drug money and are buried on Jakku, why did they fly off in a fancy spaceship? Before you say, "Kylo was lying", Johnson already came out and said that Kylo was not lying.
4. The Leia scene. How did someone with no training in the force at all- and unconscious- suddenly pull out a Supermanesque Space Flight that no Jedi Master has even performed?
5. Why didn't Luke notice Snoke seducing him to the dark side if he was at a Jedi temple? Who the hell is Snoke? How did he go from a trained, powerful dark side user to a gimp in pajamas?
6. Hux's portrayal
1. TFA does not build this up. People have inferred things. The Knights of Ren were never part of Ben's betrayal. Han tells Rey that "one student went bad," and Luke tells Rey that Ben took several students with him. Both the flashbacks that Rey saw with the Knights of Ren and the destruction of Luke's temple were at night and so people assumed they were at the same time. But it
wasn't raining when Luke looks over the destruction, and Kylo has his mask when we see the Knights of Ren (this implies he is not student/Ben Solo, but at a time later when he is fully committed to the dark side.) These were visions of
two separate events. As far as we know, the students that Ben took became the Knights of Ren and are still out there, and will probably be a major part of the next film.
2. Both of these are things that people read
way too much into. People see an inference, because they want to. Nothing is "obviously implied." And the lightsabre was previously owned by two of the most powerful Jedi in decades. It has a huge connection to the force.
It's the force that calls Rey, not the lightsabre. It's her connection to the force that is awakening.
3. It's not a fancy spaceship. It's a relatively small ship that we see from fairly far away. Why else would parents leave their child with someone like Unkar Plutt? Every aspect of that character is despicable. No parent would willingly leave their child with someone like him, if their goal was to protect them.
4. You do not know that she has had "no training at all." Yoda explicitly tells Luke "Pass on what you have learned," in reference to her in RotJ. It's ridiculous to assume that he wouldn't not have helped her learn to use her abilities in the 30+ years that followed RotJ. And she is also a Skywalker, meaning that she is very strong with the force, just like Luke.
5. Luke did notice. That was the whole point. And he was hardly a "gimp in pajamas." He was shown to be incredibly powerful in this movie. It was only his hubris that allowed Kylo to betray and kill him. Kylo is a more interesting villain anyway. And who was the Emperor in RotJ? We didn't know anything about him for 30 years.
6. This is fair. This to me feels a lot to me like set up for the next film. They are establishing that Hux hates Kylo and spends the whole movie being **** on, and that we will see a resolution to that in the next film.