How would we go about adding new sections? If we reached a democratic agreement, could it be done, or are we stuck with these?
Since most of the forums are small, I'd even suggest combining a few for convenience. Greek and Roman could be umbrella'd under Classical, and include Etruscan, Minoan, and cultures that influenced them.
Middle Eastern could take Egyptian and include Mesopotamian myth as well as Hebrew and Arab folklore.
Native American could be renamed Aboriginal or Indigenous, to encompass all such groups, not just from America but Canada, Central and South America (Aztec, Inca, Maya, Amazon), Australia, Polynesia, etc.