I have some initial thoughts @jamesallisters but first off I'm curious what you actually want to do within quadraphonic space. Is it an open playground for you (i.e. you're not sure yet or you want to try everything you can imagine) or is it something that you want to accomplish particular goals within (e.g. making Ryoji Ikeda jealous of your cool rotating notch effects)? You say "It is meant to allow for organic and real-time weaving of controlled/generative ambient and the textures of speech and/or field recordings." but that's not necessarily something that requires quadraphony, so if you plan to make it a focus it'd help to understand the goals a bit more.
my tunes: https://stevehand.bandcamp.com/