I call it wppb-mod.
Would love feedback, but mostly I thought it might be useful as Sage considers adopting composer for theme composition.
The only thing I don’t conform to here is the same coding standards, as I’m using the WordPress Coding Standards currently.
Let me know what you think! I’ve built a couple plugins based on this boilerplate, including WP-Gistpen if you want to see what it looks like in practice.