When on game creation screen you can select/limit levels, item spacing, etc. … I propose you add a check box for: “Block other realms”.
For one, the “euros” have different paly styles than we do. As well as trade values. They are typically anti-cooperative as well.
The “squigglys” are another issue. People with the squiggly names. You can’t read them, they never respond when addressed and if they do, you hear: 'Me no speaky engrish". Makes for a difficult time in a joint effort with communications.
I know you are hooked on this world unity thing, but, it doesnt work. It’s be much easier to just have the ability to block them than to be rude and ask them to leave because they aren’t wanted.
Some of your millennial ideas just don’t work well. At least allow us the option to block them from our games.