When creating a Scene Behavior, I have tried to select a Layer attribute, but haven't found it. Maybe it would be useful to add this option:

What benefit would having a "layer" attribute give you over text and numbers? Is it so you can select a layer from the layer pane itself in the behavior settings?Yes. I have made a Scene Behavior for a client, and he has asked me this feature. He wants to select in the Behavior settings the layer on which the actors will be spawned. Therefore, I assume that, for novice customers, it would be easier and clearer to directly select the desired layer from the layer pane itself in the Behavior settings instead of manually typing the ID number or the name of the layer. Also, I guess it would be less prone to mistakes for customers.