I could make good use of the emission pass but it currently includes everything that emits light and lacks control over what to include. Since the CESSENTIAL pass is meant for recreating the beauty pass you probably don't want to change that, but there should be an additional emission pass with more advanced controls, specifically:
- option to exclude background/override background color
- option to exclude CoronaLightMtls
- option to exclude Materials with Self-Illumination
- option to exclude Lights
- option to include/exclude Lights by name
This way one could add several emission passes and have different options for postproduction (fine-grained control of levels, glows, blurs etc.).
