Actually, now that I think about it (always a dangerous proposition) …

I wonder how feasible it is to add switchable routing to the HotSawz algorithm?  Process the input signal, or process the generated sawtooth oscillators.

You’d probably need to defeat or modify some of the controls (Mix Ranges; Osc Depth becomes detuning: Gate).  Without knowing the R&D particulars, it seems like an easier route to repurpose what’s already there.

In a nutshell, configurable resonant filter processor for the input – OR – for the oscillators.  Sounds so simple from an outsider’s POV, doesn’t it?