So at the same time you access the best AI and AT weapon and be allowed to field one or two more units than your opponent? Or having an increased income if you don't. Don't you see how OP it would be associated with Tigers or Elephants?
Ostheer T4 is fine, it has never been meant to be built every game. It's a bonus Tier where you can pick units that should normally be available through doctrines with the exception of Pzwerfer.
People want the old good Panther and Brumbar back from when they were completely unbalanced. If you look at USF/Sov stock roaster, they don't have a unit that can't be countered by Ostheer T3. Only brit and their Comet may require you to build a panther but even the churchill is perfectly countered by a pair of Stug.
I understand that people want to play with Panthers and Brumbar more often but having them more accessible or stronger would just mess with the balance.
On 1v1 or 2v2 nope.
Tigers are getting nerfed and the main reason you see Tigers for OH, it's because it's the most reliable way to deal with IS2/Pershing outside of been a good unit itself. Elefants are still strong on teamgames, but they have been nerf to acceptable levels (no longer 2 shotting vehicles). If they removed Stuka Dive bomb from that commander (and IL2 bombing strike on the ISU commander) no one would have a right to complain IMO about them anymore.
The whole reason i went for "combined arms" popcap buff it's because it doesn't mess with performance on the units (neither touching T4 units) nor it incentivize infantry centric strats (PG/Gren). USF hasn't break the game on teamgames with abusing popcap for years despite the usual complains about it from time to time.
You bring issues about the PV and Brummbar when both units are not been touched at all by the suggestion. I'm in favour of the slow approach been done by the MOD team atm in regards to the Brummbar. The PV/Stug should get some vet reshuffled. And probably gaining accuracy on vet as ALL other TD get.
PD: T4 is no longer a bonus tier, the moment the Stug was tailored to be a medium tank killer and nerfed. The same way Su76 spam was nerfed when they put a munition cost to barrage and nerfed the penetration.
If you want for T4 to be an "optional" tier in a similar way as UKF, then redesign the Stug G to be equally to all other 60 range TDs (note: i don't want this).
Stug as a heavy counter, only works against Churchills.