The design and accessibility keywords aren't sufficient to cover cases where usability is the main hurdle.
Be it an existing implementation that is hard to use and needs input to improve it, or a new feature/bug that is blocked on having an intuitive interface.
In cleaning up bugs I often see this word in the title but would be interested in giving it its own keyword for interested parties (especially the Wikimedia UX team) to look at.
Version: wmf-deployment
Severity: enhancement