The porn industry parodies recent movies, and old television shows. The porn industry should also take a look at old horror movies from the 1950s and 1960s. I was watching Horrors of Spider Island and it was a porn movie waiting to happen.
The movie is about a dance troupe getting stranded on an island inhabited by a giant spider. The spider turns the manager of the troupe into a spider creature. The manager starts killing members of the troupe.
Just about every scence could be turned into a sex scene. Lesbian orgies, straight, girl-girl and guy-guy scenes could make up the porn version.