What do you hope to see in Outlast's prequel?

I'm curious to hear your thoughts on this and what would you be really hoping for. Now I know this ain't like an arcade game, where you hope to see your favorite character or something similar to that. What I'm referring to is what elements of game do you want to see in the prequel and the mystery of Walrider, should it be explained a little bit further or should it stay as it is?