3) The next problem is not the first T34 vs PIV. The thing is, that you can get over the whole game faster, easier and more t34 than pivs, because of less manpower cost (55) and less fuel cost (30 fuel) and 2 less popcap for each tank.
But even though you can pump out more, they don't become more effective with numbers, they still suck at AT. It's never worth getting 5 t34/76 because they penetrate so unreliably. As far as I'm concerned I'm ok with that, but ram helps alleviate their lackluster AT performances. I agree its AI capabilities are definitely usable and have their place, but I think that your argument of "you can make more" doesn't consider the fact that making more of them doesn't put them on an equal footing as, say, the PIV. Also, in late game they are pretty much useless which, again, I'm fine with. But from the changes I see here, I see no reason to build them at any point, and would prefer going for double t-70 haha.
Ram gave them a situational opportunity to essentially sacrifice themselves and let other units do the AT job. A ram by itself doesn't do anything. And furthermore, getting a T34/76 at vet 1 is not as easy as you make it seem to, since their At performances are lackluster.
tl;dr I think you should leave them exactly as they are