After a week or so of trying it out I've finally purchased Kaivo and I'm really enjoying it :)
One thing I thought might be quite interesting would be the ability to modulate the chorus setting in the output module. Given this is a toggle style switch rather than something continuous I'm not sure exactly how this might best work. I've been switching between the settings whilst playing an atmospheric patch it sounds pleasing to me at least!
I think one knob with 3 detents for the original settings and a modulation input would be perfect. I mention detents because the middle setting is perfect :). The knob would allow dialing down the third setting, which is hit or miss with its intensity and sonic signature it leaves.