I believe a good feature to incorporate into Solarwinds MSPmanager is automatic billing based on time. Our company commonly deals with onsite encounters that go over our 30 minute time frame, at that point we apply a certain rate to the work order. With Solarwinds MSP manager I believe that the option should be present when after that 30, 40, 45, 50 minute time frame that would be set by the service provider, a certain rate set by the service provider would automatically be applied to the ticket's bill.