Make Layers show which operation a compound shape uses, like 'Compound Shape (Subtract)'
Compound shapes have 4 different modes, and sometimes it’s important to be able to see which one is used when you work with the resulting shapes in Layers — especially if you nest shapes in several layers.. But at the moment Illustrator just display all of them as just 'Compound Shape'.
Compare these two structures:
Compound Shape
...> Compound Shape
......> Rectangle
......> Ellipse
...> Compound Shape
......> Rectangle
......> EllipseCompound Shape (Unite)
...> Compound Shape (Subtract)
......> Rectangle
......> Ellipse
...> Compound Shape (Intersect)
......> Rectangle
......> Ellipse
Don’t you agree the one at the bottom is easier to navigate, when you need to make a change?