I guess all bass melodica players should be realistic about the possibilities of their instruments. As the length of the reeds double from octave to octave and get thicker at the same time, you simply have to move much more mass by blowing. This means the reeds react much slower. To change, no, let’s face it: to minimize this effect, you need reeds of extremely high quality like the a-mano reeds Victoria uses for the Vibrandoneon. But for those alone you would pay the price of a B-24.