Sad to hear it. Can you explain what results will give light contribution and direct visibility override separation? Will it give option to use to environment variants?
Both in exterior and interior, at night rendering it is used one environment together with other exterior lights, and for day lightning it is used another environment( sk or hdri).
It is difficult to understand to me how to do it, but maybe it is posibble somehow to do.
I saw your presentation of light mix, and night rendering it lacks environment, because day hdri is turned off. And first question was will there be option to use environment. Then i thought it is needed 2 variants of environment.
So we can not use light mix to do evening and daylight in one render, so it is limited , and can be used only for change light strenght. People think that it is very cool to have two versions of rendering but it is not possible.