RecRoom has actually already done this.
Broadcasting has been given out before to a few select players for live events. I’ve personally worked with these chips before and they work just like you would expect. They are just event definitions that can reach the scope of other instances. (I think the broadcasting instance is the only one that can send events though.)
I’m unsure of the reason this isn’t a feature for creators (maybe it’s unstable?) but it seemed pretty flushed out at the time and worked for as many instances as your room could fill. I would love to see these become a reality, it could definitely improve events and would be interesting to see what creators could accomplish with it.
However, dedicated circuits for room wide event definitions, variables and cloud variables would be miles more helpful. Room Events and Room Variables
Hope the devs are still thinking about this one. 