Fun thoughts! Surprisingly, a normal (soprano) flute takes almost as much air as a tuba. The instrument featured here would definitely take at least tuba volume

Fun thoughts! Surprisingly, a normal (soprano) flute takes almost as much air as a tuba. The instrument featured here would definitely take at least tuba volumes of air. None of the assists you mention would be worth it because you would lose almost all of the nuance in tone quality. It is no accident that bagpipes tend to have a fairly uniform sound and volume. And that’s assuming you can somehow prevent the additional noise these techniques bring with them.