Hi, pretty cool!
I thought about an idea like, for example, this player, was a fighter in an intergalgtic war. And he lost his memory, only thing is he knows, is to do that what's your story for the game. And that would be cool if like the man or woman who is playing your game could have like a another side quest, to find out what's the real identity of your player character!
To do that, the player needs to collect pages, for example, from the player character's diary, when all of the pages are gotten, the player can get it better, who this player character was, and how he was. I think that would be fun! :)