Event direct reference to ResourceSpecification

I would like to make EconomicEvent consistent with Commitment and Intent in the ability to reference a ResourceSpecification directly. Already it can reference resourceClassifiedAs. Looking at the Granularity section diagram on this page https://www.valueflo.ws/introduction/flows.html made me think about the cleanness of having the flows consistent.

Then if the only information we know about a resource referenced by an event is its resource classification or resource specification, you wouldn't need to create the resource itself, just reference from the event, same as commitment and intent now work.