100 modules and you still want to expand?
Sounds like you have bad GAS (Gear Acquisition Syndrome).
My plan is to use the Axo to control modules, triggers, gates and CV's rather than use it as a sound source, but I do like your idea of having it as a module that is solely controlled by analog CVs. I think I'd look for or build something that has a bigger analog side capable of handling the much higher signal levels modules put out.