What music I have heard in carnatic scales I have enjoyed, which I imagine is what you're talking about.

But comments about "these are a few special cases in all of design space!" suggest to me that that's where the quality is, not that there are vast realms of good stuff just over the horizon, and we just haven't looked there yet. If you buy into the idea that music is a superstimulus of vocal tone, it makes perfect sense that there would only be a few ways to make music appealing to humans though there are many possible ways to make music.