I am a big fan of the KANBAN feature and use MD files for tracking work. However some of those files have deadlines that I would like to be able organize by tags. There are smart tags for date and time that could be used to provide a view of files by a calendar if such a feature existed. The calendar perspective would group files under a folder like map perspective but by year,month,day tags. Using deadline or due date tags one could see that files to view or work and open them within that perspective for better productivity.
IE: Due dates tags on days of the week for tagged files accessible via calendar