if i were directing sm3 this is what i would do.
towards the end of the movie we see venom jumping on top of buildings with spidey chasing him, as venom goes to jump a huge gap the symbiote released itself off of brock, and brock falls to his death. and spiderman hovers over brocks body and spiderman leans over in dispare.
than it pans out and we see the small symbiote slithering off into the city streets following some guy who is known as Angelo Fortunato. Angelo walks into his appartmeant and his neighbours are greeting him, (hello Angelo) as he is about to step in the syboite crawls in next to him, and is hiding in the shadows. as anhelo is about to go off to bed the sumbiote attacks him, the lights go out and the screen starts to darken, than we here a sinister laugh, and the movie is over. followed by the credits.
say hello to angelo venom II, the new villan of spiderman 4!
now thats a good cliff hanger!