Read my self-quoted post above; the problem is that the Pak Howitzer is incredibly powerful without user input (i.e. auto-fire). And it's not just against support weapons; remember that the vast majority of OST infantry units need to stand still to be effective (grens, G43-upgraded units, etc.). All a USF player needs to do is put a pak-howi in auto-fire range, ignore it, and focus on his riflemen. The Axis player won't be able to do anything, since standing still (to do damage) isn't a choice, and moving reduces your effective damage by an incredible amount.
And that's all with ZERO user input from the USF player.
All infantry except for G43 equipped Ostheer infantry need to be still to fire, Ostheer is in fact the only faction that breaks this rule. This also assumes the side facing the pack howitzer has absolutely no indirect fire or vehicles of his own whatsoever, and no team weapons that the pack howitzer should be firing at instead.
How would you even nerf this thing without making it totally superflous? Ive already outlined why I think you guys are full of shit, and the fact nobody can come up with some role for it other than what it does after so many threads on this topic is more indicative of a refusal to adapt strategy.
As for no input, most of the shit in this game takes no input. I dont get this line of criticism whatsoever. Its not like the pack howitzer is going to automatically spawn three rifle squads, a MG and an AT gun to defend itself. Its not like you have to tell an Ostwind, schwere or sniper to barrage infantry.