I know that many secretaries of organizations choose to curate their own email lists instead of using the church provided ones, and some lists may simply be useful for localized needs. For example, in Virginia/Maryland/West Virginia/Washington DC the church has officially supported an annual "Day To Serve" and has representatives at the stake and ward levels that coordinate service activities.
Maybe the Bishop, Stake President, or other individual calling could be the gatekeeper on creating lists - or maybe that doesn't need to be considered. Right now when you use the application, under "Add Recipients" there are drop downs for:
- * Stake Callings
* Ward Callings
- * Local Unit Created Lists (or something shorter with that idea)
Release notes I mentioned: https://www.lds.org/help/support/clerk-resources-release-notes?lang=eng#4.1
Day To Serve website: http://www.daytoserve.org