As mainly an OST player I think the t-70s lethality is a tad too high. I do think it should be a very strong vehicle, and like the current setup, but I think an unchecked t-70 should counter somewhere like 2-3 squads, not 4-5 especially since the counters are expensive and not even 100% counters.
E: id really like to see pio anti-tank rifles as my preferred solution. Something that can force it away from a decrewed PaK, or the middle of your base without having to go full 100 muni shreks.
It is not. You sound like a typical ost tiger staller skipping t3 units.
Good news staller! Grens and pak40 is getting buff to help against t70. Puma is coming soon.
So plant some mines, harass with grens faust, git gud against t70 with so many options opened to the most progressive and laid out faction, called ost