First of all, Hello Frictional Games.
The main idea of amnesia (most likely memmory loss) remind me of a movie I once saw (don't remember the name) with the main character forget everything every time he goes to sleep. and he takes pictures of people and writing note's on them. to make it interesting. the film start from the end to the begining. so you feel like thet character. lost and confused. and your only way to survive is your pictures and notes. it tales you who's a liar and who's an ally.
I wrote down this because I wish the game makers to try and make the game like thet. this way the player's will realy feel like in an amnesia state.
Edit: I think i found the movie on IMDB:
http://www.imdb.com/title/tt0209144/