Hmm...I'll try to think of some specific ideas, but if you want some general ideas, I have plenty of those.
One thing that people forget about when they try to bring new life into a community, it's not as simple as getting a couple of dudes to sign up that your friend knows, or whatever. It's a drive. It may sound corny, but a constant marketing push to get this site known by all of your intended audience is what gets people to flock here. You have to get the word out, and there are quite a few ways to do it, like advertising this site in your signature in forums of other sites, sites like Digg and whatnot, and if other sites allow it, upfront advertising topics and such.
This site has the fatal flaw of ironically, many JRPGs in that its a great concept, but its not marketed enough to people who would find it awesome, if they only knew about it. The key to injecting new life into the site is putting it out to as many people as you can, and keeping the place itself active so people are excited about coming here.