Often times I'm using Miro to map complex systems and interactions. This usually requires one or more sets of arrows and objects that can tend to get in the way of each other if viewed all at once. Commonly, when I am displaying this to an audience, it's more helpful to display one aspect of the system at a time, gradually revealing more and more complexity.
In other tools like Keynote, this is done by clicking an action button or clicking anywhere, and setting an order of reveal. I don't think this paradigm of layers is necessary, though.