I think that it would be very useful to add to the dashboard a way to see your recently failed items. Something like the display after a session, of the items that you got wrong. I would like to be able to quickly review them prior to starting a new session.
This would something like the recent fails displayed on the wanikani dashboard. Also there, I usually review the new kanji from the current level, before starting reviews. Something analogous would be super useful.
Obviously, the dashboard has limited space, but for me this feature would be more useful than the panel displaying “days studied” and the like (who cares), badges (I have no idea what these are for) and the activity graph (incidentally, if you set the display of both grammar and vocab to “off”, shouldn’t the graph just disappear, rather that continue to occupy space with an empty graph). I could even sacrifice the forecast panel, for this feature.