musicity,
It will play, I've seen your concept several times, but I don't think it has the "intelligence" to pick the "best" parts. And even if it does, It's best - might not be the right fit.

Concept is good, but given the variations within RTs... it has to be curated by whoever assembles the style for arranger, to try finding a "middle ground" and given the nature of output audio (artifacts, sometimes awkward chord connections) user should be able to still regenerate parts.

Again, I think it's doable, but would require a lot of manual work re-tooling styles for some kind of "universal" fit.