Here is an idea that I posted several times in comments, but it could easily be lost in them.
Every time you shoot a non fatal shot at a soldier he seems to just take it, and keep walking like a boss.
Sure if you are the soldier getting shot you have your screen all bloody and blurry, but if you are the shooting soldier- you hardly see any response from the one you shot at.
My suggestion is that wounded soldiers have "wounded" walking animations, because you cant just simply keep walking (and shooting too!) when you get shot in the stomach, dont you? (and if you do, you should stop playing A3 and join the friggin special forces)
One more suggestion is to have dying animations combined with the ragdolls, one game that was really good at doing it is Stranglehold (that was a barely above average game, but that was a really awesome feature). I think that only when a soldier gets a headshot he should just drop dead, anything other then that should have a 5-10 sec animation before they turn ragdoll.
Here is a video from Stranglehold showing that. Sure, its way over the top here, but a more realistic version of this in ARMA 3 would be sweet- https://www.youtube.com/watch?v=S0d_-CZRHPs
P.S. - this isnt a request for realistic gore or something, so its not a duplicate of the realistic wounding system request (that is pretty much all about gore)