Isn't as good as I think?
Show me the non-doctrinal allied equivalent of the Panther.
The existence of the panther alone is enough to render one whole Soviet building null and void, never mind the doctrinal stuff.
You know how much of an insanely massive investment T4 is for Ostheer? I see your point with the OKW Panther but even that it's a single Panther, two t34/76's can kill it. A single engine crit and a AT gun can kill it.
The Panther isn't some all things proof tank, it's very weak to infantry based AT, it just excels against enemy armor.
gameplay should come first, historical accuracy second. if you look at ost t3, youll see panzer 4 - generalist medium tank, ostwind - anti-infantry anti-air medium tank, stug - not so good at either anti infantry or anti-tank.
it makes sense to give ost t3 a dedicated tank destroyer.
Agreed, but it make sense given the nature of the StuG for it to be good at AT and AI, the fact it doesn't have a turret means that you can always flank it with a tank or infantry unit. On top of that a simple buff to to the frontal armor and a tad more health and you have a perfect tank to round out T3. (The Ostwind should have more armor and the PIV should have more health).
I still don't see a reason for not bringing the Panzerwerfer back to T3, especially since allied indirect spam is very much part of the meta right now.