On the stable release the device page contained a counter showing firewall sessions and session rate statistics (per sec, per 5min, per hour)
As the firewall session graph was moved to the Graphs/Firewall page only the number of sessions are displayed.
Can you please also add the session rates again here?
fgSysSesRate1 = Session per Second average over the past minute
fgSysSesRate10 = Session per Second average over the past 10 minutes
fgSysSesRate30 & fgSysSesRate60 also exists but not sure if they are useful to anyone to be displayed.
Improvement
Trivial