Have you actually played the mod and used the Stug E?
I tested vs a conscripts in open around max range. It took an average 2-4 shot before causing any casualties and around 10-15 shot to kill the squad.
Although I agree with the reduction is shock value of light vehicles (and I probably was one of the first to suggest decrease shock value increase utility) imo Stug fall in to another category. It is not a light vehicle it is an assault gun.
Its luck of turret, luck of hmgs, poor moving accuracy and poor mobility does not allow it to be used as other light vehicles, neither it's role.
It can not chase retreating units or do most of the thing light vehicles do...
The hole point of the unit is to offer support fire from a distance and with the patch stat it waste of resource when used at far range.
If you are not happy with the performance of the main gun I would suggest to make it work more like M8a1 and use a explosive weapon profile instead of ballistic one. An explosive weapon profile will fit the unit better historically and thematically.
Thanks for taking the time to read and respond to my thread.