Could you add a disable feature to sni-qt?

Could you add a disable feature to sni-qt so we could blacklist/whitelist applications through the sni-qt.conf file? A lot of users control Skype through Empathy or Pidgin so they can get rid of the non-mono Skype icon. The systray-whitelist value in gsettings was a nice way to achieve this, could you implement something similar? Whitelisting might be a wrong approach, since a lot of users won't know where to enable their application, but blacklisting would come handy for power-users.