With detailed and informative category pages, there would be no need. There are those that believe category pages should be small. A one page category with links to additional more detailed category pages would work. One draw back we have now is no pictures on the category page itself. I feel if the average Wikitreer is going to spend time connecting to a category page there should be shared information on the category page. Something to justify the effort of connecting to the page, perhaps a story shared by many ancestors.