Have you tried hiring developers to do the work that you want?

I just cannot understand the entitlement of demanding some open source developer must do particular unpaid work that users are demanding.

With open source, you can fork the project.

It should be okay for an open source maintainer to say “no”.

I have to say, this book didn’t do much for me.

Maybe each server is hosting a different area in the game, and they are connected by portals. Would need a way to transfer users and their inventory to another server.