The first film was heavily satirical of those films that have the ignorant blonde girl being chased up the stairs. Scream was not meant to be a "B grade campy/cheesy flick". It was making fun of those sort of films. Scream 2, similarly, mocked the inevitable sequel and the conventions that horror sequels follow. Scream 3 made no/very-little clever or amusing commentary. There was very little left to say. They'd already done the conventions of slasher films (in the first one) and the conventions of slasher sequels (in number two)... so what was there left for three? It became more about the who-done-it murder mystery. ie, rather than mocking slasher films with a mysterious murder, it actually became a slasher film with a mysterious murderer. As Scream has more and more sequels, it runs out of the satirical/meta elements that made the first film great and gradually transitions into what it is satirizing. Craven and Williamson (whose careers are going nowhere) are clearly riding this pony until it is dead. This sequel is unnecessary, which is something they've directly criticized in the past. They are contradicting themselves.
