The 'Advanced Functions' option is currently located under Diagnostics.
Though none of the Advanced Functions have anything to do with diagnosing.
My first though was to possible move it under the System section. - Just
thought, nothing major ;).

On another note, I would like to be able to see the lease time on my WAN
interface (and any other DHCP enabled interface). Maybe add it to the
'Status: Interfaces' section.

Keep up the great work!

-Brad