volk's assault grenade is 50mp 50mu 50fuel
not grenadiers, storm troopers, cross holders.
Yeah, please, combine everything into one post.
Also, volks are much more spammable, therefore cheap upgrades are much more likely to increase the spamming of it, leading to an imbalance.
Also, please try to see this from an allies point too, not an "ZOMG they nerfed my axis. REVENGE!"