Also, instead of of Containment Procedures, the GOC can put emphasis on Termination Procedures instead. Guides on how to kill "supernatural" entities. Perhaps even more detailed reports on other SCP factions, seeing as how the GOC seems to have more in-depth knowledge of some of them than the Foundation, and also since they are more likely to get into violent clashes over the destruction of SCPs.
What I also picture is the GOC secretly preparing the general population for a war against TEs. All of the common myths about how to kill what we percieve as monsters, ie: silver against werewolves, sunlight against vampires, etc. are popularized by the GOC to secretly educate the general population on how to fight TEs without actually raising any alarm bells.
Perhaps we can also play on its WWII occult roots, but I'm not quite sure how to do that yet….