Thank you for this very practical solution. I’m in the process of defining an Agile UX workflow in a project run using the SAFe framework. Before reading your post, I was also thinking of setting up a Kanban board for the Design part, so this was of help for me.
Just one question: Have you extended the workflow to include the review of the implementation by the designer in the DEV workflow? Just thinking how to set it up (although I’ve been using JIRA, I’m not that familiar with setting the workflows).