The Other Darrin: In this pack, Madison is voiced by a completely different voice actor to the main story.
What Could Have Been: There were some scenes that would have elaborated onto some plot threads but were scrapped in the final game. One of them were two dream sequences for Ethan Mars involving being flooded in water and haunted by Jason during his black outs. These were removed due to David Cage feeling that it felt too supernatural.
There was also originally going to be scene involving why Madison Paige' suffers from insomnia. She covered wars, ya know.
Downloadable episodes, beyond the Taxidermist, were planned out. This includes one where Jayden received the scar on his cheek. Unfortunately, the plans were abandoned in favor of adding Playstation Move support for the game.