Can't really comment on Elite Riflemen only seen then a few times but I think it should either Cost fuel similar to elite troops, as 20MP for Vet 1 or close to Vet 2 is silly, 20 MP for a vet 2 squad? No brainer. Or make it like in alpha where they took longer to build, or have a higher CP cost to use, maybe make it a later game ability to replace lost squads.
Soviet Weapon Teams: Maybe drop it to 5 but no lower, personally I'd recommend lowering Maxim's damage at long and maybe mid range, slightly lower is suppression as I've seen it suppress a max range in the first or 2nd burst. Other than that I see no real issues with Soviet Mortar crews, and the only thing I dislike about Zis is it having Anti-Infantry useage as well no other AT gun gets that, it just makes Soviets feel too flexible and not punishable for building the "wrong" units at the "wrong" time.
Maxim's have very fast set up time, (seemingly) better damage and suppression than MG42, a much faster response time and reload time. The only advantage the MG42 has in its current state is Arc, but it also has very low aim/reaction time and its damage and suppression are not up to par.
Long range Combat: Not sure about a "fix" or change for this, without either making mid/short range too strong, or just gimping long range units too hard, again I don't see this as an issue, other than maybe Riflemen at long range their base rifles are very strong for a "mid" range weapon at long range, and the 30cal is very very strong since you can have 2 per squad they might need a toning down a bit. I'd like to see a small buff to Volks damage/accuracy at longer range, and maybe a very small nerf to riflemen's at long range, it is ment to be a close/mid range unit after all - If rifles do get a nerf in this regard, they should get those stats back at maybe Vet 2 or 3? So it means they are slightly worse at long ranges early game, and can't just walk up to volks and win every single time, even when they walk through red up to a volks squad in green (These kind of tactics need to be punished, try running at rifles in green through red with sturms, you'll lose 2 models before you get close)
Edit: Lol @ Rockets post, Allied fanboy alert