Profile of Maret

I also afraid that buffed cons with weak maxims make only one buildorder for SU. Cons,cons,cons....SU don't need HMGs,snipers or M3A1 we have cons! It will be very boring gameplay.

I completely agree. Remove the Penals: they are superfluous as the second main unit at the start as engineers on the steroids and now that simply overlap the conscripts. Conscripts to get SVT-40 and Soviet infantry units will finally have order.

And what we will do with penals? If we removed them, SU lost alternative infantry unit. OST have Pgrens, OKW have obers, USF have officers and UKF have engeeners with options to buy weapon and get upgrade from anvil.
I said it before, that penals must reverted into narrow specialists squad. As example:

1. Tank hunters - 3 PTRS and mosins and ability similar to brit sniper. IMHO i prefer this squad as analogue of light AT gun with cone of fire. It looks more realistic, as ptrs never used to shoot from hands.
2. Breakthrough squad - ppshs and satchels.

There should be for Grenadier as I have mentioned before in other forums

1./ its current MG42 upgrade, purpose for "extra firepower" 60 ammo

or

2./ additional man for , "extra survivability". 60 ammo

You can pick one or the other. Not both, not until Battle Phase 3 and both will cost you in total 120 ammo. Costy, right?

I believe this is a good step or diverse mechanic. No too strong or OP. The idea is, you can pick one upgrade in the beginning only until Battle Phase 3 where you can get both. Have to upgrade individually.

It should create a dilemma or difficult choice as one will have to pick one element over the other.

You want make from grens cutted version of osttruppen with 5-th man upgrade? I think more simple approach is doctrine with relief infantry ability, if you want lategame canon fodder. I think you agree that 90 ammo for even one 200 MP squad is very good trade in lategame (i could got all 3 squads from one activation, when i have 1-st squad of osttruppens)? After, just hit ability on cd and get your endless waves of canon fodder. No need weapon upgrades, only new mg-42s and paks for them, if enemy enough smart to destroy my team weapon. Grens even with 5-th mans and same bonuses as 7-th cons, couldn't even close to such efficiency from terms of resources. Grens without weapon upgrade will become free vet for ally elite infantry.

SU should get Molotov upgrade free and the AT costing only.

Like what the British Elements have although they have (Bolster Squad) it at more cost effective option. It should not be a problem

I think Conscripts should have 8 man squad. Upgrade should come earlier. 6 men equipped with weapons, the other 2 unarmed but waiting for other models to die in order to get their weapon. Fits the historical aspect like the Movie "Enemy at The Gates". Not all cons had rifles, they had to get it from another dead con. Create this element of "Human Wave Tactics" would surely improve the elements of the game and SU.

No, hell no please. Don't even consider that 2 unarmed men waiting to grab weapon from deads it's like bad clishce from Enemy at Gates. We have enough this shit in company, no need to make this in multiplayer too. And how you imagine to deal with cover problems? One model that don't fit in cover under HMG fire will pin whole squad. If i need canon fodder for SU in lategame i choose doc with relief infantry and change my ammo for free squads.
IMHO cons never become SU mainline infantry. They only useful as fast AT-gren squad or with ppshs. 7-th man upgrade in T4, don't will make them popular.

If 7th con causes so much troubles, why don't just replace him by medic with pistole? No dpf buff, onle healing out of combat.

If we want see cons as utility unit, i think we must consider how we can make them good with combine of other soviet infantry. Right now, if you play through cons (and don't use maxim) you have only one enough strong option - 2 CE with flames and 4 cons squads. Where cons uses their Merge ability to save dps from CE flames. This tactics works on early game.
What if cons will have ability to "get" some boosts from choosen nearby squad and link with that squad (i think automerge every lost member of chhosen squad)? As example:
1. If we choose CE as pair to cons, that cons squad could build sandbags much more faster (30 or 50%) or get improved version of conbag, where another side don't get cover bonus, or ability to plant mines.
2. If we choose penal squad, cons get ability that increase their ROF and regular satchel.
3. If we choose quards, ability hit the dirt with same bonuses as guards (maybe little weaker version) and nades.
4. If choose shocks, they have frag grens and more suppresion resistance.

Link will be works when cons squad and choosen nearbe to each other. It will prevent abusing abilities when you activate "Hoora". And also link will be broken if choosen die or retreat. Then we will get "utility" cons, that weak by themselves, but strong with combine with other infantry. Suc method will also show SU as combine arms faction (as it was intended be Relic).