See I'm pretty much opposite.
First, Soldiers are not trained to stick to cover like the systems normally handle it. They are trained to stack and maintain firing angles.
Second, Soldiers are not trained to blind fire over cover. They are trained to locate their target and place accurate precise lethal shots. This is for two reasons, 1) Lowers chance of no combatants getting shot 2) Raises effective nature of their training.
Last, the cover systems used today in most games is not fluid. You must "stick" to cover then "unstick" when wanting to exit cover. I HATE that. It also restricts to a certain "animation" for coming out of cover and how much will be exposed. I rather have full control how tight I'm to the cover, how much I expose, and where I expose at. I find far more control and realistic function is how it is handled currently.
I'm not saying it can't be improved on, but I would rather the current system than say a "cover based" system like RB6V, GW, etc


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