Utilize More Variables for Graphs

I'd like to see the ability to utilize the already available variables for emails, data, etc in the dashboard widgets. For a lot of JMX monitoring we use Regex to group the JMX #'s to define which unique service they are supporting. For some JMX beans they use random identifiers below the jmx port such as JDBC connections. We'd like to see the ability to tag the data on the graphs with ##INSTANCEGROUP##, etc to help better display the data.