Would you vote for more types of pipes? Maybe made of different materials like wood, glass or - stone ?

You may be interested to consider VariFlute by Audio Modeling. It allows to change pipe materials and some other parameters.

What does matter is the shape of that column—conical or cylindrical—and the way that air is set into vibration, whether directly with the lips, as in the flute, or by means of reeds (clarinet, saxophone), or with the lips on a mouthpiece (trumpet, trombone).
This is where Airteq really has a lot of ground to cover, because—just like luthiers who craft actual instruments—Airteq’s creators can experiment with these parameters, and I’m sure they’re doing so right now. That’s where Airteq’s future is taking shape, starting from the very beginning where we are now. Happy tweaking!!