I've read that some servers are planning a great migration after the release. They're going to walk as a group for an hour or so until they find a nice location to set up a new town then set that area as the new spawn.
I spent a little time today digging a 1km tunnel through the Nether. I just need to plop down a portal, throw my inventory into a chest, step through and hope that I'm not "under" an ocean biome.