@horneps
Well, I did it! The final stack works!
GEOS - 35 dimension Geodesic Spectral style optimisation using...
* LUTS - Per channel tone curve estimation (deterministic pre-pass)
* ACEO - covariance based evolutionary optimiser (explore)
* SPSA - stochastic perturbation optimiser (polish)
Oh, and just the minor task of writing my own LightRoom/Darktable. 1 min to optimise and capture a vibe, 200msec to apply forever.