Unless I've missed something, using OSC to fire a QLab cue can only happen with the QLab syntax for /cue/*/go.
Not all devices can send a specific OSC message, but will just broadcast their current state - snapshot number, channel mute status etc. Being able to capture this and use it as the cue trigger (much like capturing a midi string) would be a nice addition.
eg: Digico S21 has no way to add an out going OSC message to a snapshot, but I have companion listening for /digico/snapshots/fire 1 and then have companion send a go to QLab to have it trigger an audio cue.
Perhaps adding a capture function like midi triggers in cues have?
Thanks,
Craig K