If I recall right, Cackling Oni was a Quincy... you should check his background.

Really, there's a point after which the powers of the different spirits are redundant. In canon, they made a big deal how Shinigami/Hollow hybrids would be superior to either, but that didn't exactly turn out as advertised.

Quincy already have their equivalent to Cero, Bala, Sonido, Negacion and Pesquisa (Arrows, bigger arrows, Hirenkyaku, Ginto and Reiraku tracking, respectively). What they don't have is Hierro or Regeneration, ability to use Garganta, plus Resurreccion.

And if your going to give them resurreccion, you might as well just make a living Hollow or Arrancar who happens to use ranged weapons. (I don't consider "Hollowing" and "Living Vizards" to be truly separate types of beings. Both gain power by Hollowing a part of their body, one just starts with the face.)