An auto on / off toggle button on the list inputs and/or on the live window interface would be great.

The lists could be populated with a check box for auto on / off so you can choose what is auto-played and what is not. This is could be then used with a Live Assist mode.

Two modes:
1) live assist mode as screen shot shows and a countdown of the remaining autoplay time.
2) Full auto - Plays through list(s) regardless of checked auto boxes.

Triggers:
If a trigger is selected on the list input then if autoplaying it ignores this but at the end of autoplaying then the trigger is activated such as cut to main camera.

Screenshot will help understand this.