I have the plan to create a new, parallel world as an eternal, large, public area. I am waiting for the worldguard plugin to finally be released to do that. It HAS to happen one day.
The consequence is that I have to build custom portals between dimensions and this conflicts with the normal nether gates. So from now on, all normal nether gates do not work anymore. To get to the nether, you will have to come to spawn and use the gate that was built there by me. I guess this will be a small inconvenience since coming back one had to go through the spawn anyhow. So I am looking forward to have another world with unlimited resources – but with more danger! Beware what will be coming there! Creeper explosions etc are not excluded!