Interesting idea, but personally I like the Dynamic Range (DR) measurement developed by the Pleasurize Music Foundation more. It also provides a one-value output that has a direct relation to the statistics of the input audio, and AFAIK it is a somewhat established measurand in audio engineering.
Self-plug: A while back I reverse-engineered the DR algorithm and implemented it as a Python script. It's [DRmeter on GitHub](https://github.com/janw/drmeter).
Self-plug: A while back I reverse-engineered the DR algorithm and implemented it as a Python script. It's [DRmeter on GitHub](https://github.com/janw/drmeter).