Packed channels outputs auto-connect to materials in UE4 (RGB as AO, Roughness..)
This is a huge optimization for UE4 materials from SD published files. Basically, if I want to create instances from the same material in UE4 I'll need to reconnect all outputs again for each instance of the same Substance factory file.
You can see it in here:
This should probably be put under the Integrations category since this is more about how Substance is interacting with Unreal Engine 4.
Also, that idea sounds very handy. Saves on tedium on reconnecting texture outputs to the material repeatedly.
Functionality similar to Substance painter's UE4 packed preset where the AO, Roughness, and Metallic maps are packed into a single texture.