
With the exception of this image below:

It's hard to get a grasp of just how high the arm mounts naturally sit while looking straight forward. That said, the top image gives me the impression that the arms would still sit a bit higher than the torso. Now with the bottom image, the top of the arms sit level with the torso. Combined with the fact that it seems you're cramming weapons as low as possible within in the arm model as you can get away with (This was shown in the original pic, so I'm not that bent out of shape on this issue), I'm not liking this move.
Move the arms up more, as they are depicted in their art (I swear PGI had a schematic pic of the Rifleman IIC they made that also showed the higher arm placement). As it is now, the arms seem to be Night Gyr height vs Jaeger/Rifleman level.