Earlier quoted context omitted.
I appreciate Black MIDI not really as a "cool gimmick" but more as a genre of music. In my opinion, its main function and appeal is to embody music that is still pleasing to the ear, even if it would be impossible in practice. The majority of the pieces linked to in this thread probably aren't the best example of this, but I think Dream Battle ( http://www.youtube.com/watch?v=Lzy_WrH8v7U ) is quite good in this regar…
It's better, yes. Still not my taste, but less monotonous. Still, I'm not sure this "genre" has a lot of depths to explore. Their time and their choice, of course.
Given how much interesting music (IMO) has come from things like serialist classical, I suspect it's only a matter of time before someone finds ways of producing interesting sorts of tone color that are more difficult to achieve via other methods.