Since the cubemap is dynamically updated it already takes account the weather and lighting, though.
Cubemap intensity that varies per location does not seem physically very plausible. What I mean is that then exactly the same object of the exactly same material would reflect differently depending on where it was located even if the environment (lighting, weather etc.) stayed exactly the same.
Since this cubemap makes some surfaces look wet or oily, it fits well into caves, but does not look that good elsewhere.
Which light settings are responsible of influencing the cubemap? I didn't find any... only thing that has any influence at all, is CubemapFresnelMin setting under the [environment]
When you say such things, the only answer is - you dont need this feature. It was not done to be used globablly, that's why parameter ApplyDynamicCubemapEverywhere can't be saved, it's just for modders.