explosive reactive armour, have a few patches where it isnt there and make the armour run out (because it explodes on heat) and only make tandem rpgs be able to go through era (intended purpose) i think there should be two types of tank, maybe 3, tank destroyers, mbts, and heavier mbts, so the t80 would be a heavy mbt, a tank destroyer would be a wheeled vehicle with a tank cannon on it in return for less armour, much less armour, and the mbt is just the t90, for america im thinking of the heavier mbt being the merkava since its quite strong, the tank destroyer being a striker, and the mbt is just the abrams.
maybe the era would only apply to the heavier mbts, but i think all the rpgs need a nerf apart from rpg frag.
maybe increase the spawn rate or amount of tanks per team as well.