Last night, SethBling showed off his new map idea, and I went to work to make it into a plugin. This plugin generates SethBling's new map to the closest specs currently available. Specifically:

/mvcreate <worldname> NORMAL -g SkyGridMaker -t FLAT
I will continue to change this plugin as SethBling releases new specifications about SkyGrid. Right now, my generator has more features than his genscript, as well as more than the other plugins currently being posted to BukkitDev.