I propose creating three tags:
- WCAG-Level-A
- WCAG-Level-AA
- WCAG-Level-AAA
These tags will be added to any tasks which report non-compliance with the latest Web Content Accessibility Guidelines at the specified conformance level. The purpose is to assist in developing a VPAT for MediaWiki, and perhaps for prioritization of accessibility tasks.
Phabricator project management policy requires that all tags be proposed and discussed before creation.