It would be cool if we could send OSC out to a mix of the 2 filters like 20/80%. It is already possible by using a complex technique using the morph and then set A (this is described in the manual)
It would be better to make the process easier though, I have an idea to make it fast and intuitive.
In the mixer, there is a button that toggles which filter the OSC will be routed to and also a level for the OSC. We could hold the button while turning the level to mix between the 2 filter routings, this would be visually reflected in the filter LEDs.