Halfop is something very common today . I never heard about a server that is using +h mode with a character different from '%' whereas it is known different servers use different characters for owner/admin.
Now as I said I'm not against the suggestion, a support for owner/admin would be good, I just think there are problems with this implementation, first one is that there's already a support for owner for IRCX server, second is different servers use different characters for these modes.
