when in Preset mode, I want to send PC messages from QC switches - such as setting the preset on an external device
When in Scene mode, I want to send different messages - maybe change the value of a parameter on an external device.
When in Stomp mode, I want to send different messages - treating external devices as stomp boxes
In each mode, I want to be able to send messages to multiple devices. PCs for Presets, multiple parameters in Scenes, Multiple on/off signals in stomp