Assigning a Copy/paste of LR development settings directly into an Essential Key

Allowing LR development settings (WB, Blacks, dehaze, exposure) to be "memorized" in Essential Keys on the fly (without saving them first as presets, and then assigning that preset to a Key). 

Let's see that as a Command+C, but assigning the values to one of the Keys instead. We could add on-the-fly settings to several keys while editing, and reusing them as photo lighting conditions changes during development.