BTTF movies are among my very favorite. I don't mean the way hipsters love 80s movies, I mean in the way that I usually watch the first one once a month or so and I went on a quest to visit the real McFly house in So. California (yeah, I have a picture of me standing on "the street" where the DeLorean flew off at the end! I'm a nerd). That said, I have always disliked the graphics on the hover board that Marty uses. I realize it is pink because he took it from a little girl and girls love things pink, but the design and the words "hover board" look really bad. Even in 1989. Of course that is like me criticizing the Venus De Milo because it has no arms. Those movies are beyond any real criticism.
Looks like all but two of those concepts were used in BTTF2.