Nesting Activities

How about being able to create a new activity from other activities?

For example in my main room I have two activities “Lights Off” (which turns off all the Hue lights) and “System Off” (which turns off the TV and receiver). I would like to be able to create a “room off” activity that would simply trigger the above two activities, rather than needing to redo all the off commands.

This is just one example - another would be being able to easily embed “TV on, receiver on, lights on” inside any activity where those are needed.