Glad you forgot to mention that cons would also beat grens 10% more easily.
to be fair OST now has the pgren spam which is quite effective aswell and does not require any side techs to make... a 10% buff is perfectly viable considering how good a gren + pgren combination is...
Wait, you name one unviable core WM unit, why do other people have to do your own homework?
imma list all core WM and SOV units and their viability (V for Viable U for Unviable)
WEHRMACHT
pios = the only engineer unit of WM (V)
grens = core to every decent ost build ever (V)
sniper = viable at high skill levels (requires a bit more micro than the average joe is capable of) (V)
MG42 = god tier MG (V)
pak 40 = 2nd best AT gun statwise with the best secondary ability(V)
GR41 = used to be a god tier mortar... still viable as a support weapon for ost (V)
222 = sniper and LV killer (V)
SDKFZ251 = the flames of redemption... may be a bit OP (V)
panzergrenadiers = used to be unviable but pgrens see much more use and definitely count as viable (V)
ostwind = used to be meh but is now extremely powerful as a wipe machine (V)
stug = cheap medium AT for axis... used to be OP but is still solid(V)
panzer 4 = a solid medium tank (V)
brummbar = still extremely efficient at infantry wiping though no longer OP (V)
panther = best medium tank ingame atm although worse vs infantry compared to the P4 (V)
panzerwerfer = guaranteed wipe on weapon teams and AT walls and extremely effective vs infantry blobs (V)
SOVIETS
engies = the only engineer unit of SOV (V)
conscripts = the subject of the matter... a featherless chicken against most enemies it encounters... by the time upgrades are unlocked the battle is most likely lost and hence its viability is compromised by timing (U)
maxim = worst MG ingame (U)
PM-42 = used to be the god of mortars (with precision shot) then became shit and then became the self spotting mortar (V)
zis 3 = worst AT gun by stats... but barrage is extremely good at wiping enemy squads and weapon teams that i sometimes forego the PM-42 depending on the situation(V)
M3 = clooowncaaar (V)
penals = still the soviet meta (V)
sniper = just like the wehrmacht sniper but its soviet (V)
T-70 = god of LVs (V)
SU-76 = used to be god tier... then became shit tier... then got buffed to viability (V)
m5 Halftrack = used to be shit... now pretty good as blob control (V)
SU-85 = 2nd best tank destroyer (V)
T-34/76 = some people dont like it... but i like it due to its low price and the fact that it does alot of AI damage for 90 fuel (V)
katy = a soviet panzerwerfer (V)
soo as we can see there remains 2 unviable soviet units... the maxim and the conscript while the entire WM lineup has already been buffed to viability