The main problem is that this ram ability makes an enemy full health tank instantly useless.
Also it needs to be doctrinal. Having it non doctrinal is very lame tactic to play against. If german tanks are too strong or soviet ones are too weak, then its a problem of the unit stats. If the Ram ability is needed to even it out, it becomes a lame gameplay.
I also didnt understand why the T34 and T70/Stug and Panzer4 are in the same building. Why should i build a T70 when i can have a T34 or why should i build a stug when i can have a Panzer4? I guess just the fuel difference...
totally agree about RAM and T34 balance issue
I think u make a point here: T70 would be much more usefull if moved to T4 to give some kind of anti infantry vehicle and Su76 would give some kind of motorized arty to T3, which would improve both tier flexiblity.
About Stug and P4 I think thats alright, as P4 can be seen as the compromise unit between anti-inf and anti-tanl