One button to toggle ALL AUs on/off would be nice. It would be easier than clicking thru the list, toggling every unit individually.
And this would avoid any intermittent pops, noises, weird volume changes etc that can happen when some AUs in a chain that was setup to work as a whole are still active while I click thru the list.
(Next, having presets for the whole AU list would also be very useful. But a on/off button is more important.)