I do have plans to create a dashboard of sorts. I’m going to start working on that very soon, but I expect it will take bit to reach a releasable state.
The way I use Slated and Daily notes is to always write a task on the daily note for which the task is due. That way just as you say, I can click on a date in the calendar and see what is due or overdue. This works especially well because if I see any open circles in the calendar on days in the past then I know I have an overdue task!