8. Peter #3 As A Bitter, Vengeful Spider-Man - Spider-Man: No Way Home
One of Spider-Man: No Way Home's greatest triumphs was in doing justice to Andrew Garfield's iteration of Peter Parker, who was of course done so dirty by the wildly uneven Amazing Spider-Man films.
By the time we reconvene with him in No Way Home, it's clear that "Peter #3" isn't in a good place. He confesses that he's still wracked with guilt over the death of his love Gwen Stacy (Emma Stone), and in the years since her demise he's become a bitter shadow of his former self.
Though Peter #3 doesn't go into specifics, he basically implies that he shifted away from being a friendly neighbourhood Spider-Man and instead transformed into a more violent, merciless type of superhero, while using his persona to distract himself from the realities of his grief.
While Peter #3 thankfully wound up in a far better spot by the end of No Way Home, it sure would be fascinating to see a down-and-out, ruthlessly unforgiving Spider-Man vengefully prowling the streets in the wake of Gwen's death.
The fact that Peter #3 anguished over his loss for so many years would've surely seen him embark on some uniquely dark adventures as Spider-Man, ones quite unlike those undertaken by either Tobey Maguire or Tom Holland's variants of the character.
We'll almost certainly never get to see anything from the period between The Amazing Spider-Man 2 and No Way Home, sadly, but the storytelling possibilities are nevertheless massive.