Feature Plugin Merge Criteria

https://make.wordpress.org/core/2014/10/30/nightly-builds-for-feature-plugins/
https://make.wordpress.org/core/2014/11/03/open-update-thread/#comment-20735

Feature plugins must...

* Be present and up-to-date in the plugin directory.
* Be as ready to go on mobile as they are on desktop.
* Undergo security, js fallback, i18n, and accessibility audits.
* Have visual records for major flows through all new interfaces on all devices.
* Have mature UI that isn't going to derail the release train.
* Have a history of posting weekly updates to make/core.
* Have a history of regular plugin directory updates.
* Have a testing audience.
* Publish a merge consideration post on make/core.
* Exist for at least one release cycle. Plugins created at the beginning of a release cycle should not be considered for merge until the next release.
* Merge at the beginning of a release cycle.