By this change you won´t kill them, they just won´t be no brainer. If enemy gets pak before you get light vehicle you will spend your manpower elsewhere and when he isnt prepared you get light vehicle. Or you get it because you think it can pay for itself or force enemy to some commader, it just won´t be no brainer as it is right now
But you don't need AT Gun.
I don't why but ike 90% of players always pick Pak40 as Ostheer while you can safely pick PzGrens, use them as AI and once you see V, just upgrade with double schrecks.
And simply nerf their performance if anything.