How about some more additions to Shadowrun 5e? Who hates acid corroding their armor?
Modification Capacity AVAIL COST
Noncorrosive [Rating] 6 Rating x 250Y
Noncorrosive: This armor is covered in a chemical “seal” designed neutralize acidic contact. When you at damaged by acid, you may add the noncorrosive rating of this armor to the soak roll. If you take no damage from the attack, your armor is not considered exposed to the damage and its armor score will not decrease. Also, when you are damaged by acid while wearing this armor, your armor will not start taking damage until a number of rounds equal to its noncorrosive rating.