Im a manager at a theatre and by working there I can tell which movie is going to be a hit just by seeing the reaction of the people as they pass by the poster or see the trailer. When Blair Witch 2 had a poster out, 90 percent of the people who saw it said something negative about, thats how you know a movie is gonna suck. What if Sony put out a small teaser for a possible ghostbuster 3 on one of their movies, or a poster to be put out at theatres. The publics reaction to this could convince sony to give the green light.