I agree a 3d visual would be useful for spatialization and mixing but I don’t see how it would be useful for anything else.
Moreover, music and dancing are two sides of the same coin and in styles such as hip hop and popping you have 'beat-killers'[0] who basically represent music through their motion.
If you build an appropriate spatial language, you can compose music from dancing or you can build a form of generalized dancing. I've explored this concept artistically[1],[2] and I'm currently working on formalizing it and making it computational.
[0] https://www.youtube.com/watch?v=IeNn4XG0QHo [1]https://imgur.com/gallery/pfrvIot [2]https://imgur.com/gallery/MoDVr6v