Nice thought, perhaps, but I doubt anything would come of it. Quaternions came into vogue because the problems of Euler angles were very apparent in practice,

Nice thought, perhaps, but I doubt anything would come of it. Quaternions came into vogue because the problems of Euler angles were very apparent in practice, but we still think, at best, in yaw/pitch/roll, and for a lot of people, roll is a little on the sketchy side. Now we have twenty, twenty-five years of code and resources that make use of quaternions. In some ways, game development is incredibly hide-bound and conservative, and for the most part eschews rigid correctness for performance, convenience, and a loosey-goosey good 'nuff feel.