[rhizome]

>Say you like a certain sound in a song and would like to use it as a starting point for your own sound patch.

Isn't that resynthesis? I mean, this could certainly be an addition to the vocabulary of resynthesis techniques, but is there something more categorical about it?

[pizza]

Differentiable resynthesis. You input a desired goal, it tries to achieve it, through (essentially) trial and error. Then the artist can focus on imagining goals, rather than fiddling with knobs :)