My take:
The Amazing Spider-man = The Lizard.
The Amazing Spider-man 2 = Electro & Vulture.
The Amazing Spider-man 3 = Green Goblin, Kraven and Chameleon
The Amazing Spider-man 4 = Doc Oc, Sandman, and Rhino. (Black Cat)
The Amazing Spider-man 5 = Mysterio & Venom
The Amazing Spider-man 6 = Sinister Six!
What do you think, and who do YOU think should be a future villain.