The awesome answer would be to give the Russians molotov cocktails that are overall less effectives vs tanks, but give them lots of them!
Killing a tank needs to be easy, and atm this requires satchels. Why? Not cause tanks were easy to kill irl, or because satchels were great, but because of the respawn rate of tanks.
If I kill a tank, I can reasonably expect another to be in its place in 30 seconds. IRL, if I killed a tank, it meant I would not have to deal with it. However, lets say we are on on Konigplatz.
There is the old option. Somebody runs over the hill at the tiger with a satchel in hand. Because of the way the system works, by theh time they are even in LOS, its to late. The tiger is dead.
However, the tiger is back in 30 seconds.
Then there is a new system. Satchels are gone. The Russians use some weaker AT weapons to take out the tiger. It takes them 2-3 minutes, during which time it was shutting down the objectives. This is all reasonable. Tanks *were* really scary.
Finally, they get it blown up. IRL, in an battle like that for Berlin, it means that the position is now tank-free.
In game, another tiger is there in..30 seconds.
The tank system does not need to be modified. The Satchels do not need to be tweaked.
The whole system has to be fixed from the ground up. Driving tanks to their deaths like worthless, changing positions/entering/exiting tanks, tank damage in general, angling, it all needs to be fixed. The idea that we can address some problems and not all is just silly.
The PTRD is an effective weapon. I can kill 5-6 tanks off of the starting ammo from a good position. The problem is that even though I'm killing all these tanks, with the respawn rate, and the way spawns are, etc, in a stock map, it doesn't make a damn difference. I kill a tank. A second one is passing. I am busy trying to finish it off by the time the first one has respawned, and passed my position again. Thus, I cannot handle it. In the end, I made a minor dent. Satchels very quickly dispatch tanks, sometimes multiple tanks, and actually put fear into tanks, often unlike PTRDs. They do make a dent.