This says a lot. I think the reason why the pak is missing it such a lot is because it is fast AND small. Thus +- 2x reduced accuracy vs it cos it moves fast and presents a small target. Schreks usually hit it at least, but as stated earlier it takes 3 hits to kill it.
Considering how fast the t70 kills pgrens and its ability to kite them cos its range is longer plus schreks only fire when stationary, a slight range nerf will prolly be warranted. T70 also has somewhat better pathing than larger tanks, so in the hands of a skilled opponent killing it using only schreks is a bitch. Getting two schrek squads at that time in the game will leave you very vulnerable in other areas since schrek squads are less good vs infantry. That is to say if you even have the 240, yes 240 munitions for this, not to mention a lot of manpower.
The problem that now presents itself is if you increase its target size, it will also be more likely to get hit by tanks and everything else. We don't neccesarily want that because that affects its utitlity later in the game also. The crux point is right where it comes out and the other player only has t1 and t2 to deal with it for a couple of minutes. These minutes can often be game ending (or at least game changing).
The pak should be looked at from a much wider perspective as its role is more spread out throughout the duration of the game. I dont think a slight accuracy buff is out of the question, since it doesnt really do much at all vs infantry, will it be too effective vs inf if its accuracy is increased slightly? I don't know, but I don't think so. Also the Zis should perhaps receive same buff to be fair?
Another problem with t70's is that they can chase down and kill infantry that is retreating and you can lose numerous squads if you are not careful. It can even run amock in your base if you dont have schrek squads. Now im not saying it is completely OP, it just needs some small tweaking...
All the proposed nerfs to the T70 are SLIGHT ones. It will definitely still be useful and deadly, it must just be counterable if a german player prepared well for it ie. got a pak.
All of this sums up why the system in terms of units in VCoH is much better compared to the not so good situation of now where PaK's accuracy increase would improve it's performance against infantry...
In that case, except for strafe the game should never be patched IMO because of all of this. Most units do fill their niches fine atm.