The PzIVH has too simple damage map in the game. Let's compare it with, for example, the torpedo boat: every gun
can be damaged separately. I suggest to divide "turret" damage to "75mm gun", "coax MG", "AA MG" and "turred rotation".
And the panzer (and the flak) are too vulnerable, these good armored vehicles must be more rugged! The track can be damaged by 13mm bullets, hell!