The ragdolls in the game are often overlay stiff and freeze up mid fall, or they just look weird with their legs crossed, arms up or various other problems.
If the ragdolls would look and fall a little more realistically, I feel like that could enhance the immersion.
I feel as if the bodies could stay around for just a tad bit longer too, it really helps to capture the feeling that you are in a large-scale battle.
One more thing, maybe make the faces react a bit instead of staying frozen.