I made an unplanned trip to see this today. As someone who didn't love the Raimi films, it was really cool to see those characters return but in a different directorial style.
No spoilers whatsoever, but here's some initial thoughts.
Dafoe was amazing. He was fully committed to the role and it was like he never stopped playing Osbourne. A couple of the other villain actors did seem like they were cashing a check, but man... Without giving anything away, Green Goblin was menacing, scary, and truly formidable foe (Dafoe?). And it was nice to see that WITHOUT the cheese and camp of Raimi's approach.
I did always like Alfred Molina's Doc Ock, though. And he was right up there with Dafoe in recapturing the character to a tee. He was in the movie a good amount, and yet I still wish we got to see him more!
Again without giving anything away, this movie paid off a LOT of story beats from previous movies. And not in a stupid heavy-handed way like Star Wars has done (Solo shooting first, Chewie with his medal). A lot of fan servicey moments were a bit corny at times (mainly in the more lighthearted dialog scenes), and I probably would have been more annoyed if I didn't see this in a theater and hear how much the hardcore fans loved those moments.
Also......this movie has feels man!