How can a category not have an editor when we have over 200 editors who can edit everywhere in the directory and any editor higher up the tree can edit in sub categories. In fact we are positively discouraged from being 'named' at the foot of every page we can edit in, if we can edit 'from above', it can put off someone from applying to edit in that category.
But y ou seem to have an interesting attitude, you want to become an editor in an outdated (your idea not mine) directory. Sounds to me that you want to be an editor, not for the good of the directory or to build categories for other surfers, but to get a site listed. If you get an application through and you give a whiff of that then you will certainly be rejected.
Now I understand your venom to DMOZSo in other words, I too am still included in that number