One reason I believe this is not going to happend is that calibration of tuning is deliberately tuning voices off the equal temperament anyway, not to sound sterile.
I consequently saw three voices tuned above equal, and three voices below. This to create a more phat sounding synth doing chords.
So a scale/tuning off equal temperament is meaningless since never tuned straight equal anyway,
Maybe calibration should be really tight to equal temperament, and then offer more pitch accuracy settings like some synths do. But all existing patches should be first setting off equal not to suddenly sound too sterile.
I saw a review from Tim Shoebridge over Moog One, where they introduced such a strict calibration that it sounded all lifeless. And this was only on/off thing, and obvious choice then having it off.
Sequential offer this Vintage knob, Behring DeepMind offer a range of settings for rate and deviation in pitch and parameters separately to get the vintage tone you want. Starsky Carr did numerous reviews comparing synths directly with each other, and the vintage settings did all the difference to sound like the vintage synths.
