I am undiced whether or not this bothers me yet, but it rehashes everything from the old movies. Instead of Leia to be found it is Luke. Instead Luke living on a desert planet, separated from his parents for his own protection, saving a droid being scrapped which so happens has an important hologram it's Rey. But unlike Luke who had old Ben and later Yoda to help him to realize and use the force, Rey learns intuitively to use the force.

Luke means "Light" and Rey (even though it's a derivative of rex meaning King) I guess it is used in this instance to allude to light as in a ray of sunlight?

BB 8 had the shape of V.I.N.CENT, a personality very close to WALL·E, and outward appearance of a typical astromech droid from the Star Wars universe, a version of the R2 D2 unit with Dyson ball technology. :/

V.I.N.CENT was the robot in The Black Hole, it's name was short for "Vital Information Necessary CENTralized," the production company was Walt Disney Pictures. WALL·E was Walt Disney Pictures/Pixar movie. I didn't mentioned the Disney connection as a criticism, just an observation.

There so much more, I don't have time to get into, maybe later.