Hmm... As I almost solely stick to FPS rather than TPS, I find it hard to really sympathize with most of these points. At least I play the shit out of Dead Space 2, so let's take a look:
1) Placing the camera behind your right shoulder never bugged me at all and actually felt very natural. This may have a lot to do with the overall design, however. For instance, the elevators tend leave a bit more space on the right side of the door, allowing more space for the camera. The corridors are also often designed for you to walk slightly to the left, giving you a straight, uninterrupted view.
2) Can't comment a lot on this part. Dead Space don't use any cover system, but from the little experience that I gained from playing the Mass Effect 2 demo, the cover system actually worked great all around. This is also a very welcomed feature for the few FPS's that implements it (such as Perfect Dark Zero).
3) This didn't bother me at all. Having a third person view on a character that constantly is ready to take a shot just doesn't make sense both visually and realistically, in my opinion. But yeah, this is not actually helping gameplay at all, just making it feel more real.