@Grivah: Yeah. I've played through it multiple times on the 360 and haven't run into too many things that have hindered the experience with the exception of the boat scene. For SH3 though, the voices fall out of sync at times and the sound skips and the frame rate dips horribly any time I use a submachine gun or a flamethrower and it stands out so bad that I purposely avoid using them. I'm hoping for a future patch that will address these issues. :\
I'm right with you on the fog issue. It doesn't seem worse at all. In fact, I think there's actually more fog in this version if anything, with the exception of a few cutscenes.