How about a quick method of disabling a container.
Current state - Click on the container, pan the mouse all the way over to the tiny checkbox target in the configuration pane and click disable.
Future state - little icon by the rollup icon that can be clicked to disable/enable, differentiated by perhaps a color change of the minimized pane perhaps?
I know what you're thinking, "talk about lazy, he's whining about moving the mouse (which his hand was already on) 2 cm along his desktop and clicking"... but still what an easy usability win and one less click to do a task I find myself repeating frequently.