Choosing your instance name, setting up a description, specifying who you are, why you created your instance and how long you plan to maintain it is very important for visitors to understand on what type of instance they are.
If you want to open registrations, please decide what your moderation rules and instance terms of service are, as well as specify the categories and languages and your moderators speak. This way, you will help users to register on the appropriate PeerTube instance.