i think this at least deserves an explanation before it's locked
i haven't really looked into it too much, but i believe bukkit doesn't support two functional nethers at once by default. we would have to use the
Multiverse plugin or write our own solution.
we don't really want to do either of those right now; it's really something that bukkit should just support out of the box.
unlocked topic in case somebody knows more than me about how the worlds work, and has an idea of how to make multiple nethers work very easily