Penal Battalions
M3 Scout Car
Sniper Team
Maxim
Mortar
ZiS AT Gun.
Pick 3 for T1, pick 3 for T2.
What combinations can YOU come up with that works for Soviets? How should the first two Soviet tiers be set up? (How much does this thread feel like its from 2013?

Keep in mind the timing of T3 and the feasibility of going both tiers or skipping one, team game synergy (2+ players building one or the other tier at the start), and HQ/conscript synergy.
I think there are two feasible alterations to Soviet T1/T2 unit composition, but the purpose of this thread is not for me to argue that specific point. I'm more curious as to what people might think would be the best combination of units for those tiers. Given, well, the limited combinations.