There doesn't seem to be any practical way to create a secret in-game society. These look like my only options:
I can create an org on the community website, but any org members would have there name displayed for everyone to see... not very secret.
I could use a different platform to host and organize the org, but then advertising would be an inefficient pain.
I'd love it if the devs would make the "members" tab (that displays everyone's names) optional. Until then, any ideas for hosting an org with anonymous members? Any support or criticism of having an optional "members" tab?