My suggestion is to not allow lobby leaders to join other lobbies.
As a host, you should be aware things that happen with or on your server, such as but not limited to, your server crashing, rule breakers/trolls, etc.
We all know mikengo is notorious for hosting ridiculous lobbies with illogical restrictions and take 2+ hours to start. If you're hosting a lobby, you should be aware if something happens, such as but not limited to server crashing, rule breakers/trolls, etc. You also can't start maps that would take <10 mins to fill when mikengo does this.