It would be extremely helpful to have a hook so we could set an individual toggle action's state from a bash script. In a similar vein, setting a buttons icon from a script would be very useful for dynamic information without having to write an entire plugin.
As an example of the usecase - I use AwesomeWM. It would be great to be able to call a script when I change my current tags to update the buttons on my streamdeck to indicate which tags are active. StreamController has a similar feature, where you can set a script for a button to call every X seconds and set the title of the button to the output of the script, although it's not perfect and it only updates button text.