Profile of Hannibal

I think the problem with the SU76 is that it was meant to be build at the mid/end of the LV phase to first fight light vehicles and then scale into the midgame to be a decent contender to out-of-position-P4s or just take a shot at an attacking P4 to force it back before the P4 gets too close. Following the Soviet theme of multi-role, non-specialized units, it also had an arty function to make up for it's relatively poor AT performance compared to the StugIII. Since it was very spammable against Ostheer that needs to rely on a fast P4, the SU76 became too potent and got double nerfed. Since the barrage costs now 35 mun, it does not make sense to buy it early, even if your opponent did not have a vehicle yet, because the barrage costs quite a lot of ammo. The barrage (same for the ZiS AT gun) is usually not worth it unless you're desperate of can force retreat a super important unit, usually a MG42. So you build the SU76 only as a reaction to enemy vehicles, otherwise it is practically useless.

Now there are two problems:
Against OKW, you either run into a Luchs or a Puma, or a P4 that can be penetrated only unreliably. While it is okay against a Luchs, you're still better off with a T70 that also fights the Luchs but kills infantry as well. If the enemy has a Puma, the SU76 is risky because it is slow and has no turret. And the OKW P4 has too much armor, so it's just better to save the fuel and wait for a SU85 instead.
Against OST the SU76 is an okay-ish option only if you're behind on fuel and the enemy already has a P4. But due to the AT nerfs the SU (which was actually meant to be Soviets AT option) is not THAT cost-effective on the AT departement anymore, even against a P4 (you need 5 pens plus a snare to kill it and the SU76 hits unreliably). If you're not behind on fuel, just get a T70 instead or wait for a T34 or SU85. You don't need a dedicated AT vehicle for Ostheer's "Super light" vehicles (251/222), PTRS or a single ZiS will do fine.

Like I said in another thread, I would lower the barrage ability to about 20-25 mun. That makes it affordable to use, but not spammable and should still shut down the SU76 spam like it was pre-nerf.

But su76 can camo with doctrine. It's a cheaper alternative and before de barrage price nerf it was used in the meta. A su76 comes early enough to fight P4 and even though it can't solo them, coupled with a zis you could repel and even kill it.

Su76 =/= drugs

Simply because the units they have to face.

The problem with pre-nerf SU76 was that it could force a retreat on a P4 Due to range and high pen and that the barrage was free, so it could displace crew weapons and kill 1-2 models of attacking infantry with no extra cost. Also it was quite cheap, so by the time the enemy got a P4, you already hat ~SU76 out, which made the P4 quite useless.
Since it got a double nerf, nobody builds it anymore. It has become mediocre at best at it's AT and can't really fight infantry anymore (35 ammo is quite pricey, especially if you use it against a moving target). I think the SU76 should get back a little bit of far pen or the cost of the barrage should be reduced to ~20 mun.

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I had a suggestion once upon a time :

T4 : T34/76 90 fu. Having T3 unlocks T34/76 (in T3) for 100 fu.
This allows to make more T34s, albeit less efficiently.

The Ostheer Panzer building is 15 fu !!! The Russian equivalent is 90 fu.
Yes. I know about Battle Phase costs. Still.

Making T34 earlier is not the answer, however.

* I agree with Katitoff that if you put T34/76 into T3 as it is, you've
just deleted the T70.

I think it should appear in T3 AFTER T4 has been unlocked (And cost more)
(In T3 only, not T4 - that one remains at 90 fu).

Why would you build the T3 T34 for 100 fuel if you already have the T4 T34 for 90 fuel?

Sorry but what do you mean by "intended"? Axis TDs intended to deal with mediums and allied TDs intended to kill heavies? The point of this topic is not their penetration performance against mediums.
JP4 does self spot at VET2, not by default.
The durability of JP4 is not enough to protect it against the INTENDED allied Super-TDs. 230armor vs 220/240/260 pen of M36. They can penetrate each other with every shot.

Targets of StuG and JP4 are light vehicles and mediums. Allied medium tank is usually 160 armor, making Stug and JP4 pen with 100% chance.
Unlike Axis, with the expection of Soviets Allies do not have access to another tier of tank destroyers that can deal with heavies. This means that their TD must be able to deal with the heaviest armor, otherwise we go back to the "I win"-King Tiger button.
Also, Allies usually don't have much heavy armor, so the Panther is an additional option as a brawler tank or against heavy call ins or heavier British tanks to reliably deal with them. That's why Stug and JP4 don't need the pen to deal with heavy armor.
Also, JP4 has 45 base sight which enables it to spot mediums for itself without being fired back on.

I am not suggesting to buff the Panther and nerf the Su-85.

I am simply making some points:
1)Unit should have role in the game.

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2) Units should be balanced both in vet 0 and at higher vets. The relationship could change if there is a reason. A unit vetting slower might need to have superior vet bonuses.

3) Unit should be priced according to their role if the role of the JP is to counter enemy mediums and enemy tank destroyer the unit should cheaper than those units.

4) Tds should not have 100% chance to hit and penetrate enemy vehicles at range 60. Else they have little reason to engage in other ranges.

Since you said that SU85 vets faster and better than a Panther, this would destroy the balance from vet 0 units and that Allied TDs would be OP in general, it heavily suggested that you want to nerf/buff some units.

Apart from point 3 I do agree on the rest. Especially for point 4 I would like the game to be slower with bigger maps in general so that tank battles can be drawn out a bit. But for CoH2 it's too late, we need to tweak the current system to the best status possible.