I haven't had the courage to take another dive into the crazy-ass Philadelphia-ish world of Heavy Rain, mostly because I was barely impressed with how everything turned out in the end (especially with that guy), but partly because the character couldn't even be bothered to bring a fucking umbrella.
Story-wise, it's like Indigo Prophecy all over again: off to a great start, then things went horribly wrong and you know exactly when it went downhill. Much to my surprise (and disappointment), the things David Cage promised to avoid this time around (supernatural, etc) didn't matter anymore, as the story itself became the problem regardless of the premise.
But yeah, I liked the concept of the Origami Killer (but not the motive behind it), and the gameplay is a big improvement over Indigo (and could be a template for future adventure titles), I liked some scenes that didn't feel forced, and other moments that are just there and they're subtle and unsettling at the same time. There's just this nagging feeling that the writer just listed down independent scenes, cool on their own but distracting in the whole scheme of things.
I guess there's another time, Mr. Cage. Try adapting a regular bestseller first, if you don't mind. :-)