SMC and FC, though they are components, not features.
Most valuable features are the network maps and server and network response time. Maps is a unique feature which provides logical grouping of different segments of the network with complete visibility and alerting based on a total or protocol base as per defined threshold. So, one can check how many connections to the server and/or on the protocol, and who is consuming the most bandwidth. This is done, while the server and network response time provide quick identification of root cause of slow response from the server.