Thank you, Frank, for your generosity in sharing! Much appreciated. 
In my use case, the majority of my tasks are not date specific, and don’t require a complex calendar set-up.
Instead, my tasks sit in topical folders, and I gradually feed mirrors of them into a simple urgency based task sequence (Hot, Today, Now, Next, Soon, Later, etc.) within my dashboard. This allows me to work through my list in order of urgency.
However, this is where reminders would be really helpful. Occasionally I want to flag items with a reminder to alert to me to any important or time-sensitive tasks that need to be moved up in the urgency sequence.
This means that if date-based and recurring reminders could be added into Workflowy, it would help my task management immensely.
Thanks in advance for your consideration.