Julian PapulianI found this suggestion on GitHub/mastodon.
"Expanding the #localtimeline (LTL), or having something like a #sharedlocaltimeline would be an interesting feature for [all] us, as we could add other #instances which are focused on..." the same topic, institution or region.
Multi-instance "Shared Local" timeline. Allow servers to stream "Local" timeline to eachother. · Issue #19948 · mastodon/mastodon
Pitch If Instance A and B both agree, allow them to stream each-others Local timeline to the other, and both display a combined Local timeline. Motivation We are seeing formerly small instances gro...