Specifically I wanted to make a system that handles overflow ore into voidflux by changing the recipe in the machines to the appropriate one that handles that ore but there is no way to do that as it stands. At least by my understanding. If you give tell it voidflux it makes the pure voidflux recipe, if you give it the ore it makes that ore. So I would think signals for the inverse void craft recipes would be nice. For reference in the recipe prototypes you just set "hide_from_signal_gui" to false to do that.
