for a combo class e.g. .button .big . green.
if you click the hieracy stepped button to choose button,
you could then have the dropdown arrow clickable to choose the state of that button.
Currently id have to create a new button with just the class of button to add a state change to the button.
This would be helpful if you have a generic state change like a filter that you want to affect all combo class buttons, like a saturation increase