hmmm, I'm wondering how hard it would be to make desert full of volcanoes using WorldEdit....I think an evil lair really needs to be in a sea of volcanoes..
BTW Ben, are the new Portals working for you?
Agreed. I haven't tried them out yet. There is a nether portal at your home on kepler 22e and on the tower. I visited them.
Are they supposed to work? If yes they did not work for me.
PS:
Well i "volcanoed" it up a bit....
BTW there is also a pathway leading from my lair to Zyth's house.
I will built a another pathway from the lair to the tower.
Agh, the Nether portals, no they are not working and I don't know why.

However in my tower on the floor below is a Multiverse portal. There is a sign there. And on Gliese 581d in town is one near the castle made out of Redstone ore. And one in the Uni. on Kepler. And one on top of the castle in Gliese 581d.
There is also the /warp; /warp[warpname] and /setwarp function that should work to move around. But please don't use them on the Challenge map, that's simply cheating.
Late news...WTF!!!
I used the /mv tp gliese_581d_nether command to get to the Nether. I fell from a great height and died. Using /back I returned and survived to be just near the Nether portal where we are growing the nether pot. So I walked through and it worked, back to Gliese_581d! Back through again and in the Nether, so now it works? I have no idea what happened, maybe a bug where one of the Nether portals lost their spawn point?