How about this idea.
In the current map we Have, make a new area which connects us to the World Server.
The World Server would be just one giant Galebrook (a different name of course).
And a the tribes amongst all servers can build their bases here as well but would be competing against all tribes amongst all servers.
Have a “Crown” or some sort of trophy placed somewhere in the world server. A player can bring it into their tribe house and must defend it.
Holding the trophy in their tribe house would give tribe some sort of perk.
This would encourage players to get along and help each other progress in their home server.
Also have more chaos spawn rate in world server or a super chaos or something to add more challenge.
This would totally make this game competative and challenging.