I'd never heard of In Dark Alleys before, but it seems like it doesn't quite know what it wants to be. The break down of the psyche is so individually detailed but overall broad it would be a useful tool for any character creation. Quantifying the elements of a character like this helps give an idea of who the character is far better than any alignment or snippet of backstory. Mechanically I love that your nature can backfire on you, so long as whoever is running the game doesn't use it to take too much control away from players.
The biggest question I'd have is why go super natural? It seems like such a good system to throw curve balls at players in any genre of game. Espionage, fantasy, sci-fi, even something that is grounded in everyday life could be made into thought provoking commentary by the author of a world using the systems in a way a short story or film couldn't. Maybe I'm missing some of the point since I haven't dove into the material but it almost seems tacked on to give the players some action and an over arching goal.
I suppose this highlights a part of table top gaming that draws me here. Anyone can write rules for a system and any one can change them for their own group. I'd have fun just making characters with the psychodynamic system. Rolling through situations on my own would still have twists that challenge me since the game almost gives cues. Even by myself I'm not writing a story alone. It's the kind of story telling that, once you establish characters, you can really pick up at anytime. Just a chatroom and a few friends is all you need to start having fun.
RE: Spotlight on In Dark Alleys