This is in the "this may be something new" department:
The new pitch effects already generate two additional guitar voices. So.....
I think a "Waveform stomp" could be accomplished with a two voice chromatic pitch effect that has these additional features;
1) Each generated guitar voice can be distorted into a sine wave, square wave, or sawtooth wave.
2) A mix control for each voice: guitar to waveform mix
The Ducking features (already in the chromatic pitch effect) would allow the mix amount to be touch sensitive, when set to less than 100% waveform.
When mix is set to 100% waveform, the Ducking control would vary the fade in time for the waveform voices. With small amounts of ducking, this would function like a waveform "attack" parameter.
Detune would still be available, to provide fatness.
From what I have heard from the existing chromatic effect, I think this could still be used with chord smoothing, especially at unison, +12, and -12. At extreme settings, single notes might be more musical than chords. But, the possibilities for sonic mayhem would also be present.
If it absolutely has to be mono (like similar effects in other products), understood. But, if the Kemper does this with chords, that would be better than anything else....