Share visibility between some groups or categories (eg. I have 10 groups/categories and I want 3 of them to be able the see each other’s topics)
Show all the topic list in the homepage but when someone opens a restricted thread gets the message “You’re not allowed to see this page”? This could be important when launching a new website
You might create another group that has access to all of the categories.
You want people to see lists of topics that they cannot access? I think that I’ve seen some plugins that do that, but they seems like a way to annoy users. Why know about things you can’t see?