Unfortunately, this would definitely need to be a donator perk. This would be effectively offering something similar to Realms. The only way to implement this would to have an array of servers that would have the sole purpose of hosting these mini servers. Those costs add up quickly. However you wouldn't need to have a donator rank to join someone else's! Yes
so your saying you need a donator rank to make one but you dont need one to join? also since i came up with this idea would i get the privellige of making 1 for free xD