I really enjoy this idea. I have a very clear picture in my head of what the game will turn out to be. I'd platform in a gritty world that looks like an old Valve game.
What I hope to see from this game are some polished movement options. This would be a great game designed like a movement shooter but without the guns. Maybe give the player something to hold like a crowbar which they can swing for fun. Or just go full Mirror's Edge with running hands visible. Find ways to attach the player to this environment.