Meanwhile, we have developed an information message system which allow PeerTube instance administrators to display information to people who visit it. This is very handy to indicate that your instance will be in maintenance on a certain day at a certain time and that the service may be disrupted.
The feature is called <a href="https://docs.joinpeertube.org/admin/following-instances#instances-redundancy" target="_blank">"server redundancy"</a> and caches your most popular videos to help serve additional viewers.