I don’t think has been requested yet. It would be useful in the UI to organize dashboards in folders. I maintain 4 different dashboard sizes and orientations plus mobile in the house. While I have often strived to share dashboards between the screens I inevitably end up creating a separate set of screens for each device. It would be nice to organize the Dashboards screen in folders to keep the screens together. I do it by naming right now but this would potentially help with organization and navigation.