I suppose I don't mean to attack lv2. It is a good extensible format, and is
the product of much dedication, especially on Dave's part. I could write my
own extension and be done with it. But then we end up with a situation like
the external UI is today.
My concern is if we would ever have a standard extension for this kind of
thing when the primary maintainer considers the idea stupid, dumb, or
broken.