> I could implement a wet/dry setting that multiplies the source samples and then mixes them into the result, if I understood the concept right.

Haven't tested your version yet, but werman/noise-suppression-for-voice plugin introduces some delay and dumb wet/dry control (or mixing with original sound source in some other way) doesn't work, so it might turn out to be not so simple.

Right now there's no such feature in place, but I imagine keeping the buffer from before denoising and mixing it into the denoised result (plus the multiplication) will do what you're describing? It may increase volume, I might need to reduce the volume of the denoised audio first. I'll play around with it, and am open to hearing what you've got to say about it.