This is a great nice plugin, and I was anticipating it. However, I need to add a more feature to this plugin, which is Padded category and Padded topics should be visible to everyone, even if they are not registered, this will make not registered users to sign up to read the locked topics / or it will show the visitors about the services or solutions the community provides. It will help to make more members.
(When a non-registered users click on it, notice should pop up and tell the visitors about the topics, and why its locked. )