This is something no other system does. It will allow people to setup processes so that if a user cancels their subscription, you can delay removing the tag until the paid period has completed. It loads a field on the contact with the expiration date, and then can apply a tag/goal/action to that contact depending on the results. You could use that to kick off a campaign that tries to recapture the user (cancel their cancel) and eventually that removes their access tag or adds a PAYF or CANC tag to drop access.