OK but perhaps this is a feature we could have - a category that is restricted to certain groups, and then a couple of settings:
- Totally Private - the category is hidden from view, and returns a 404 error if someone tries to view it
- Private unless you have a link - category is hidden from view, but if someone clicks a link to the category it says “Oops, this category is hidden, here is how you can get access”
- Locked - the category is visible in the main list, and when clicked it says “This category is locked, here is how you can get access”
I think especially where a hidden category is a perk of a membership, this could be a good way to publicise that people are missing out, and so to encourage users to sign up!