It would be useful to be able to create multiple layer assignment sets per scene, and not just the single one that the Layer Explorer currently provides.
Let's say for example that you have a scene containing many different categories of objects. You put these objects into layers for better scene management.
However, if you need to categorize these objects in another way for any other purpose you are stuck with the one single setup that Layer Explorer currently provides. Sure Selection Sets can be used as an alternative, but then you don't have the functionality of the layer system and Layer Explorer.
The State Sets tool features tabs that allows for multiple state setups.
Why not have the same functionality for layer assignments?
I am sure I am not the only one who have felt a need for multiple layer setups in a scene.