Well, this is certainly not cool, they said Viral residue would have a use and still not a damn thing.
The resource costs for all 401-450 crafted items will all be rebalanced to require a variety of all four Premium quality Bioanalysis materials:
Metabolic Enhancement Agent
Biological Compounding Chemical
Artificial Microbe
Virial Residue
Compounding chemical got some uses, but nothing uses Viral Residue, what a disappointment.