Currently, actions that play sounds can be set to use different output devices, but there is no indication in the action list which device an action is set up to use.
E.G. currently it looks like
Play sound, '{VA_SOUNDS}\Sound.mp3'
whereas I feel it would be useful to have something like
Play sound, '{VA_SOUNDS}\Sound.mp3' to 'Speakers'
The default device could just stay as it is (without a suffix), or something like
Play sound, '{VA_SOUNDS}\Sound.mp3 to the default output device'
This could also apply to the "Say Something with Text-To-Speech" and "Captured Audio" actions.