Even before Homecoming, I was making the argument that the first movie should be the Vulture, the second movie should be Mysterio, and the third movie should be Kraven. I'm not going to claim much credit for being two for two so far; I wanted Vulture, Silvermane, and the Enforcers in the first movie and we got Vulture and the Shocker. I also really, really want Big Wheel in the second movie and I'm not holding my breath on that one.
My pitch was the first movie would sort of go with a youth vs. age theme with the Vulture. The second movie would involve Mysterio trying to make Spider-Man look bad so he could claim credit for himself. In doing so, the New York public would begin to see Spider-Man as a menace. The third movie would have Kraven, learning of this menace named Spider-Man, trying to hunt him down for his own personal glory as well as prize from J. Jonah Jameson.