Hello there. Let me first say that i love your armor design. Fantastic work! It always bothered me that many armor in the game dont look well on hivers, especially helmets.

Although i think that your armors are poorly balanced, especially light plate. It provides only slightly less protection then unholy armor while having almost no penalties. And the difference between light-medium-heavy plates is only in arm protection. There is no reason to use medium or heavy over light since they have much higher penalties to attack and arm protection is not as essential. In fact its beneficial for hivers to have their arms exposed- you need to replace them with robotic limbs asap anyway.

My solution-
1) all armors and helmets have slightly less defence
2) light, medium, heavy plates have the same 15% dex penalty
3) soldier drone armor has 20% dex penalty
4) light armor gives -2 attack and deffence penalty, medium armor gives -4 attack penalty, heavy armor gives -6 attack penalty.
5) hive helmet gives +2 to melee attack and no perception penalty
6) hive masked helmet has -5 perception penalty, no penalty to attack and 25% dust storm resistance
7) ronin helmet has -2 defence penalty, -10 perception and 50% dust storm resistance
8) samurai helmet has -2 attack penalty, -10 perception and 50% dust storm resistance
9) soldier drone armor has -10 attack penalty, -20 perception penalty, 50% dust storm resistance and 50% gas resistance.

Feel free to change stats on your armors as you see fit (or dont), this is just a suggestion.