Well im not sure what they could do with a second dead space story wise. A prequel prehaps?
I thought the sound was great as well. I liked stalkers atmosphere too (the cat and dog noises really added to it
) although the game went downhill when you got towards the reactor in my opinion.
Also the military suit you mentioned is unlocked after you beat the game. as long as you continue a new game on the same difficulty it will be in your shop.