Hmm, not sure what to think about this one. I really liked the quieter character moments and fun cameos, but the action I just found really exhausting and overly frenetic this time around (especially everything to do with the main villain's powers). And the new team of Spider-people just wasn't nearly as fun as in the first movie. Not to mention the fact the multiverse idea feels pretty played out by this point.
I was struck by the juxtapositions in the movie between EXTREME action and then low key drama. Most of the movie consisted of extended dramatic conversations, particularly as the last act progressed. Seemed more common here than in most live action comic movies.
Having said that, I thought the movie was quite good. Tremendous character development across the board, and a good exploration of parental relations with teens. Hard not to be a big fan of Gwen and Miles after seeing this one. However, the main point of conflict in the story--whether it is acceptable to risk all of existence to save one person's life, and ultimately, whether or not the structure of reality is set or can change--wasn't played out in a way that was very satisfying for me. They didn't do a great job of explaining the rules (how do they know how to potentially stop reality from disintegrating following a "canon" event? How do they know as much as they do about the multiverse in general?). Then, the characters who ended up on Team Miles were just those that liked the guy, which didn't feel too organic.
My kids came away thinking Spidey 2099 was the main villain, and I suppose that is the filmmakers' intent, but he was more than justified in his actions to my eyes. But not played very sympathetically. A little tightly wound perhaps, but if the stakes are so high, and you were personally traumatized by doing precisely what Miles is attempting, it seems hard to fault the guy.
We've already seen some parallels in the MCU, and I suspect we will see more with Dr. Strange 3, etc., but as a cohesive and well constructed film I feel this is better than anything Feige and company have done since Endgame.
Another observation--I only saw one quick, obvious reference to the symbiote Spidey/venom (as a comic collage), which was a bit surprising to me.