Looking good! I'm sure any additional categories we'll need we'll work out as and when we do the others and retroactively apply. For now, I think it's a good format to follow.
For characters, I think it would be handy to have their External Links section have a link to their individual .cha file, for ease of people acquiring if they decide to make use of a character after reading their article.
22 pages so far. Not a bad start at all.