Wow. Reading this is almost like fan service. So many meta nerfs.
That said, it still looks like I won't be seeing any Soviet doctrines other than Guard Motor anytime soon. Besides the increased fuel requirements to get the first t34/85 out, they're still gonna be unstoppable killing machines.
Edit: It's the t4 structure they get built out of though, right? I guess if you have to build t3 first then maybe that will change things.
