Preflight payload prior to publishing to subscribers

Just had a thought that some webhooks may contain enough info to determine if we need to take action on them just before it publishes it to the subscriber. If the payload contained a specific element that is known as a boolean or the existence or absence of a key/value for that particular channel/subscriber then it would be nice to successfully exit with (no action needed) and not involve opening running and closing other files that contain extended business logic.

Perhaps at the subscriber level, an evaluation could take place and then even based on the logic not deliver it to one subscriber but pass it along to a different subscriber.