We already have skirts for these tanks :
- Zrinyi II with or without skirts (Skirts being graphically lacking)
- Stug III Ausf.G with or without skirts (Ok, we have)
I know nothing in 3D, but maybe to add skirts should not too difficult ?
In this case, skirts could be added to other tanks.
For example, the StuG IV could have skirts as on the image :





