What kind of functionality are you thinking of:
Extra action to existing Hue channel
Is the functionality already available at a service like IFTTT, Alexa or Google Home?
What functionality would you like to propose:
Switching of Hue devices, scenes and groups is possible, but choosing to switch a ZONE also would be nice.
If this is implemented, then via a zone in the Hue app, devices across rooms can be switched at once.