My Perfect Spiderman 4 Scenario
First of all, the second Symbiote, known in the comic books as ‘Carnage’, should plummet down from space, but this time it shouldn’t take over Peter’s body.
Now cast your mind back to number 3. Flint Marko (Sandman) got turned to mud in the sewer. It would be interesting if some leftover radioactive sand grains mixed with the water’s molecular structure, to create another one of the comic book’s villains: Hydroman, a guy capable of turning his entire body into water. This would be very similar to Sandman, which could steal a massive amount of appeal, but prove to be even harder to get rid of Spidey.
Finally, Carnage should go to the bottom of the waters where Doc Ock drowned (along with the fusion reaction machine) from the ending of the second film. In the comic books, there is a point where Carnage takes over Doc Ock to create Symbiock, enhancing the power of those mechanical arms multifold. Whether it would be logical to do so with a dead body or not I dunno, but the body may have faded away just to leave the robotic arms half-submerged in silt.
I still wanna see Mysterio make the Statue of Liberty come to life, but that just sounds plain silly…