I think you should have one.
Any time you see anything that makes people unite or come together, you should rip the core of the idea and stick it into your playbook.
I don’t care if it’s a news story, a marketing strategy or even something that happened on the way to work. Find the chewy centre of the idea and figure out how it can be done online. Any event, any person and catalyst that brings people together, even if just for a matter of moments, is worth adding to your playbook.
Imagine you did this once a day for a year. You would have 365 ‘plays’ you could make to build an online community. That sounds quite impressive to me