I'm not big fan of COC or WGL-mods artillery. They shoot true shells that fly and hit, but they also consume power from processor as that power could be used to AI or something else. Also i'm not compelitily sure that OFPs or even AAs ballistic model is accurate enough to model some 30 km long shots. Not nice surprice to find out that indirect fire went short some 500m killing your CO. Creating shells and determing distripution by values and mathematics is more effective way.
Forexample COCs scifi map deploy firemissions and action-menu-panic are not that fancy as you shouting to radio WITH YOUR FACE RED coordinates, direction, length, etc. Again FDF-mod takes the lead with simple but realistic looking way (you tap firemission orders to SANLA. altough being too simple but then again how many of us are trained FOs (As a grunt in OFP you don't need to know how the gun works or how you place yourself to proneposition (legs, elbows, shoulder low etc.) you just tap "z" then "v" and press "mouse button 1").
I'm not trained FO and in COC unified artillery i didn't hit the target (two scattered infantry platoons inside valley) with my mortar platoon even at tenth adjusting round, when shell hit at 100m away from target and next (after tiiny-wiiny adjustment) round flew about half kilometer long. And that doesn't please me.