User blog comment:LucidPigeons/Category Cleanup/@comment-1969141-20160310003030/@comment-366087-20160310051108

Certainly there is room for establishing category trees, aka "category/subcategory". The proper way to start a tree is with a node. Such as "Powers". Then under it subcategories such as "Elementals", "Physical" or "Bodily" or "Superhuman", "Mental" or "Mentat" (internal), "Psionics" (external), and finally "Magic".

Then work on what is sub under each of those. Nodes themselves should hardly ever be used

The main thing is to try and avoid redundant cats and a minimize overlaps.

So first step is Nodes. Each should be as broad-stroked as possible. I suggest starting with: Again, this level should hardly ever be tagged to a page unless the character absolutely does not fit in any of the cats under them. Ex. "character" can apply to nearly every page since this is a character-dominant wikia, but almost never tagged to a page.
 * Genre
 * Media
 * Franchise (brands)
 * Archfoes or Nemeses or Versus (formerly "______ Villains")
 * Characters (leads to most of the cats about the characters themselves
 * Powers
 * Occupation
 * Conditional (deceased, undead, honorable death, etc)

I also strongly advise that each node have a set number of cats which can be tagged to a page. For example, "archefoes". Some villains, especially from comics may have a ridiculous number of heroes they are villains for, more so when you factor in appearances in crossovers as well as the contributors' penchant to tag for every little thing they can find 1 frame or mention for. So "archfoes" should be restricted to the heroes which they are most known to be against first, the ones people think of when either Hero or Villain is mentioned.

I would recommend 6-10 as a limit for "xxx Villain" or whatev we end up renaming it to. Genres should be no more than 3, Media should be 3 or 4, etc and Etc. Anything more than the tag limits should be detailed in the articles.

This should force contributors to think carefully about what they are tagging as to how the character is best defined, as well as building better articles.