“The world’s changing. Time we change too.”
With the third onscreen iteration of the character in 15 years, the easy answer to mixing up the Spidey formula is adding other heroes into the mix. An easy feat considering the MCU’s bread and butter is cross mixing brands to further their own banner. But where other films find their detriment in that, HOMECOMING actually utilizes that to tell the story of a kid lost in a world that is far too big for him. Peter Parker’s uncertainty in his own identity on the ground level is reflected differently through his Spider-Man persona. He’s trying to fit in at school? Of course he’s going to try to fit in with the quintessential “cool kids” of the superhero world too.
Not only that, but the world-building is actually interesting in its own right. It’s not how these events change future movies, it’s about how all prior events establish a different world for the ordinary citizens that don’t get suits of armor to defend themselves.
Who better to look out for them than their working class hero?