Devs are currently testing those changes:
-reducing damage significantly, but increased chance of hurting crew members. However, the critical hits would be temporary. Increased accuracy, too.
-Plans to introduce a preventive warning signal to show every noob tanker when he is being shot by Mr. Arty
-Showing the artillery position on the minimap after firing (Seb: WG you do this = I make a huge rant)
Perhaps integrate the Battle Assistant Mod in-game.
