Cool...but gets stale
I think there's an awsome premise here that needs to be expanded on. My main concern with the game is that replay-value is almost non-existant (once you know what to do, that's it...you don't need to play this game any longer).
Don't get me wrong, I think it's really good (your cutscenes are pretty sweet), but I just feel that it needs more. Perhaps a variety in mission-types for the sequel? You've got talent, so the sky's the limit!