Can you truly have too many Dews? Oh, you did not mean Mountain Dew!
Seriously, the only thing I believe organizers should concern themselves with is not scheduling one event at the same time as another event. That was the reason for my question on using the Events Calendar. That could be the central place where all Do's are listed.
People attend these events for many reasons... and while the same "core" people seem to attend the majority of the events, new and different people also attend.
If people don't respond when it gets posted, that might be a good sign that we are "do'd - out".
William