1) This was a top-notch Spiderman movie, and a very good superhero movie. If you like superhero movies, this one will not disappoint. But that's a gimme, I guess. The villain is sympathetic and complex, and well-played by Michael Keeton, who can simply drip menace when he wants to. DC should find a way to get him into the bat suit for a shot-for-shot adaptation of The Dark Knight (Not the movie, which was great, but the comic. He's the perfect age to play that batman now.) Maybe they'll let him age a few years and play Bruce in a Batman: Beyond movie.
2) Tony Stark is a rich guy with no super powers. Unless his super power is to create super villains. His actions or inactions have led to the creation now of:
Iron Monger (Iron Man I)
Whiplash and his drones (Iron Man II - Maybe blame Tony's dad for this one?)
Aldrich Killian/Fake Mandarin (Iron Man III)
Ultron (Avengers II)
Vulture & Shocker (Spiderman: Homecoming)
Spoiler character who will be obvious after you watch this movie (The next Spiderman movie)
No wonder the guy is wracked with guilt. What's funny is that this was an issue for comic book Tony Stark, too. His technology was stolen and used to power a lot of villains and he eventually went on a rampage to put an end to it.
3) Spiderman as a legit teenager with teenage problems and limitations. (15-yo raised in New York who needs to drive in an emergency and can't even figure out how to turn on the headlights... hilarious) I really liked this aspect and it made sense as a reason why he wouldn't be an Avenger, even though he really wants to be.
The only bad beats in the film were courtesy of the Ned character, who acted more like he was 12 than Peter's age. He was funny a couple of times, but most of his scenes fell flat to me. Plus, I feel like even a nerdy goofball would do a better job of staying serious about keeping Peter's secret identity.
Good movie, though.