Sounds like a good idea for a feature request.
as an aside, I'm not convinced that the whitelist feature is really that useful.
In my current environment (a University) I don't care who plugs in to the network (a BYOD environment),
in a previous environment I did (PCI-DSS and serious about security), and we made use of VMPS/FreeNAC; today I'd deploy 802.11x. Unknown devices would get punted to a guest VLAN with a captive portal to identify the owner & authorize it's attachment to the network (could be part of a BYOD strategy).
