Welp. I guess now is a good time to go ahead and discuss this.
With the 1.5 update talking about the addition of Nether Quartz, chances are that we're going to need to generate a new Nether once the server updates. Alternatively, we could just expand the border in the current Nether, but we'd have to travel for a while to get to the Quartz and stuff. I assume that generating a new Nether would be more beneficial.
I know that people have been building things in the Nether, machines and the like.. and I'm not thrilled about people losing their buildings in a Nether reset. So this topic is up for debate. There's still plenty of time until 1.5 hits, and then our additional waiting for Bukkit to update, etc. So, if we end up deciding to generate a new Nether, you guys will have plenty of time to get your valued stuff out.