Our brand new GTNH-2025 Server is now out.
More Information:
https://stonelegion.com/mc-gtnh-2025/gtnh-2025-server-information-including-client-download/

This server has very little changes. The biggest changes is removing caves, ravines, etc from the overworld to give it that very nice mining experience and help reduce entity lag.

This is a long term server and is planning to stay online for years.