No worries.
The problem with the 7 man upgrades people is that it's simply too good of a package.
You're also ignoring what I said earlier. Grens also need tech to get them to peak performance, by the virtue of having to tech twice; researching battle phase and putting down t1 or t2.
As for Soviets, at this moment in time, you will see an IS2 nearly every time. If you face a Soviet in 1v1 or 2v2 right now, there's no way they're not going IS2, unless matchmaking has a fetish of putting me against people who only go IS2.
The fact of the matter is that Wehrmacht is depednent on the MG42. Your Grens are not going to beat Penals, Sections or Rifleman on their unless its under extremely favorable circumstances.
Even basic cons need an MG42 to counter, because there will always be more Cons than Grens.
I can agree that 7th man can be toned down. But not removed. Cons where non excistant late game far more then grenadiers. Before 300mp penals soviets had no inf presence outside doctrinal inf in the late game.
Grenadier are/where easier to vet up when replaced late game cuz of better long range profile and non doc lmg upgrade.
When grens need tech to reach peak preformance that tech also gives acces tech building lmg rifle nade and multyple units to choose from. You will see more cons then grens because cons start out worse in dps terms. You can gave all the hp and utility in the game but it dont mean jack if you cant deal enough damage yourself.
Penals sections rifles all cost more then grenadiers. Thats why they should not win 50/50 vs those units. T34,s get wrecked most of the time vs a single p4 esp okw p4. Because its cheaper. In both cases you need support or have the numerical advantidge. Nothing wrong with that.
So the Is2 just like tigers and other heavies need a delay.
The 7th man can use a towndown. Imo the vet boost and 7th dude needs to stay and cover bonus can be toned down. Decreased reinforce cost removed or toned down. But at nade and molly no lonfer required at t3.