Re: this post, I can't quite put my finger on it, but I disagree with everything you say. Why are you comparing su-76 and t-70? They are completely different units and I see people getting both in one game. You say t4 gets rushed too often? On the contrary, I feel like the meta is to go t3 and then rely on a kv-8 or is-2 for late game.
And did you say a '76 and an '85 is a strong combo? It's the weakest medium tank with one of the most underperforming TDs. Having two together won't magically make them super strong. Literally every tank / TD combo is stronger. P4 / StuG. P4 / JP4. Sherman / Jackson or M10. Cromwell or Churchill and Firefly. Compared to literally any other faction, a '76 and an '85 is the weakest by far.
Su76 and T70 were both a light vehicle option, depending on tech choices. You'd choose one or the other with tech. Now that both come from the same building, there's no reason to get a su76 ever.
I'm sure the meta is still doctrinal call ins, I'm speaking from a core faction perspective. You can't take advantage of t3 units for very long because nothing in t3 is conparable to say Ostheer t3. 240/85 or whatever it is just to build light vehicles and a halftrack while everyone else has stuff like Puma's, stuarts, AEC's and stugs? Yeah okay. You have to skip t1/t2 for fast t3 if you really want to take advantage.
As for 534/su85 the reason I say it's a potent combo is because t34's are disposable. The su85 can sit way back picking off his tanks and as long as you trade everytime (with or without ram) you come out ahead. Other factions don't have 300/80 medium tanks.