I wish for increased depression angle on the 17 lber anti-tank guns.
For example, the one next to the spawn hanger of the hilly vehicle base literally has no shot on anything at all. It is on a rise and all nearby spots for enemy tanks to show up are below the travel of the gun. You can drive right up to it with impunity. This is true to a lesser extent to many other 17 lbers (if you pick the proper approach path).