The feeling among categorization project members is moving in this direction:
1. There should be information, roughly a paragraph, on the category page as to what the category is about, what it is a part of, what the subcategories are, what project is associated with it, and what profiles should be linked to it.
2. Often there is much more information appropriate to link to a category. This should appear on a linked free-space page.
3. The major consideration involved is that the purpose of the category is so a person can see what profiles are grouped under it, and a person may seek this information multiple times. The person should not have to scroll down several pages of information each time he or she wants to see what profiles are grouped under the category.
4. I express this as a feeling, because it has not yet been codified as a policy, to my knowledge, but we are moving in this direction!