It would be very useful if it was possible to capture sound during a video capture. I know it is possible to capture the microphone because this can be done when live streaming to Facebook unfortunately there is no way to turn on the microphone during a video capture. Also it would be useful if you can catch sound from the applications during a capture. This would help facilitate walk-throughs.
Overall I've had the Oculus Go for just under a week and I have to admit I'm super impressed.