If it helps, if you want to know what I did, I created a room called "server room" (because I actually have a server room) and I created most of my scenarios under that room. Mostly scenarios that I'd want on multiple orbiters that will perform the same function. Evening lighting, that scenario is in 3 rooms for the entire house but I didn't want to create the scenario 3 times or if I change it, have to change it 3 times and make sure they all match. I created it once in detail under server room. For the other rooms I created evening lighting but the action is "execute a command" and the scenario number for "evening lighting" in the server room instead of "living room ceiling on" and "Wall Sconce 40%" etc.... I then hide the server room from the orbiters so you don't see all these random scenarios from the orbiters.
So back to this topic I have a "blank lighting" scenario for my server room that has all lights unassigned. This is what I use for events that wants to call a lighting scenario like watching media and stopped watching media. Plus it's an actual scenario that does exist so I should not have any weird problems when events or other scenarios call on it. So far it's been working pretty well as far as I can tell. As I grow the system and add or remove lights i will only have to modify one scenario vs every room that I want to have access to that scenario.
Just throwing that out there...
