A.C.E. for ArmA 2 is a full conversion mod and is based on A.C.E. for ArmA 1, which was based on WGL for OFP.
The WGL roots were "When realism matters". We lifted this already a little bit with A.C.E. 1.
And with A.C.E. 2 it is no different. We try to keep a balance between realism and gameplay. We try not to sacrifice either in name of the other.
We try to please as many as possible, but it is simply impossible to please all.
Please feel free to give constructive feedback on our choices.