Ze gave me a pretty nice critique of localization deficiencies in Edit Flow. Part of the problem as I'm aware of it is that I only periodically recreate the POT file because my workflow is to commit to trunk on WordPress.org, and download the POT file generated. I'd like for it to be much easier to do this on a regular basis.

It would be neat to have a suite of translation tools as a part of WP-CLI including, but not limited to, regenerating POT files. I'm not familiar-enough with all of the internal mechanics of the gettext implementation to offer recommendations beyond this.

@joehoyle mentioned he had started on this for another project and might have code to share.