It is clear that Sony and Kojima could make a killing selling a slightly improved port of Peace Walker on the PSN. It's not as if the development team has to completely re-make the game, either. Most PS3 owners would probably be happy with some touched up geometry and textures to suit the larger screen. There's no need for bells and whistled like fancy lighting and fully animated cutscenes, either - most PS3 owners are sophisticated to know that this is a PSP port. They just want a chance to play the game cooperatively with friends.