The advantage of a tunable drum is that you can adjust the tension of the skin really quickly. It is only a matter of moving the leather toggles towards the rim or back to the centre. This way the sound of your drum doesn’t depend on humidity, or the lack of.
This also prevents the skin from tearing, as you can always take off excess tension, for example during transport in the car with hot weather.
The possibillities: (but i love it if you have any special wishes)