As a hardcore Bolter I have been getting more and more upset when I hit someone in the arm or hand, it just doesnt do anything, the damage it does has no concequences, he just shoots you within a second and you dont stand a chance.There should be done something about that imho.
What I would suggest is when a person gets hit in the hand/arm/shoulder, the sway increases x5 or x10, whatever it takes to make hitting something much much harder, maybe even add enormous conespread to the smg otherwise the smg's would just be able to shoot you unaimed without any trouble. It would be way more realistic, as I cant imagine being able to shoot somebody after just being hit in one of my arms. If you shoot someone in the leg, they limp and make an easier target, why isnt there a concequence when you shoot someone in the arm?
I hope this hasnt been mentioned already as I dont read the forums that often.