Idea of "increasing Ost squads survivability" is good, surely. But... if that will be done, I think, we will also need to get weapon upgrades for Conscripts, like DP-28s or SVTs or something like that.
Such as low firepower of conscripts is their weakness, compensated by survivability, low survivability of Ost squads is their weakness, compensated by serious firepower (good accuracy, weapon upgrades...). If you gonna "heal" weakness of 1 type of infantry - don't forget to heal another similar mainline infantry kind, which also should be healed after that for purpouses of balance.
Anyway, I would agree with that NCO or whatever else kind of making Ost squads live longer, but only in package with firepower upgrades for soviet Cons. It might be weapons, it might be something, that increasing their shitty accuracy and low fire rate... Whatever.
P.S. Since we talk about squad increasing - I don't understand why 4 men tommy squad costs 280 MP, but 5 men suqad costs... 280 MP? Guess it should cost at least 40 MP more! And anyway, that increasing squad ability for UK is OP. Their infantry is powerful enough, getiing bonuses from cover, have wide weaponary... and can be squad increased. I don't see any reason, why they deserve to have such thing, really.
Keep in mind that another advantage of conscripts is that they lose less firepower per man lost versus Grens. So if cons lost one man, they still have 5/6 of their damage versus Grens losing a man going to only 3/4 of their firepower. If I'm not mistaken, conscripts have a similar overall damage output to grens, just spread out over 6 men. Even with the NCO, you can lose a gren and still have four men, but one of them is effectively useless in combat.