8) Sinister Six
As The Amazing Spider-Man 2 teased, the next movie in that universe would have been a spinoff focusing on a bunch of Spidey’s enemies. It would have been helmed by Drew Goddard and probably featured the likes of Green Goblin, Lizard, Doc Ock and Vulture.
The Sinister Six movie does present many of the same issues as a Venom solo movie, mainly how can a film about Spider-Man villains work without the wall-crawler. However, many of the traditional members of the Six don’t have origins tied to Spider-Man to the extent that Venom does. They are mostly criminals who just happen to come into conflict with Spidey rather than being hell bent on revenge against the hero, like the symbiote.
We wouldn’t hold out much hope for this one happening just yet, though, as another comic book movie about a team of supervillains also with the initials SS has beaten it to the punch.