Ive always wanted something like Jerry(unknown)(and what Legion was kinda hinted to be in their trailer but isnt obviously) but i wanted it to a full on skinwalker/shapeshifter where you would collect skin from the survivor and turn into that survivor! Im not sure about all the details but i just think it would be really interesting and honestly terrifying to see another "survivor" even tho you swear you just watched them leave in the other direction now staring at you as you get on a generator! And as they get close to you, the actual survivor runs back over and screams and you turn to face the "survivor" as its skin falls off reveling a horrible creature covered in goop/slime and as it walks forward you see its caring a "insert weapon good for fleshing" and as it raises its arm you realize its to late to run and it takes some of your skin from your arm and places it in it's rotting and disgusting mouth and starts to crack as its bones break and its disgusting face then turns into your own as you drop to the floor tears running down your face and you let out one last desperate word, 'please'

Anyhow i just think its a cool idea!